Generated Narrative: CodeSystem observation-pghd-codes This case-sensitive code system http://hl7.org/fhir/uv/phr/CodeSystem/observation-pghd-codes defines the following codes in a Grouped By hierarchy: Lvl Code Display Definition 1 Activity Activity 2 activeEnergyBurned Active energy burned A quantity sample type that measures the amount of active energy the user has burned. 2 appleExerciseTime Apple exercise time A quantity sample type that measures the amount of time the user spent exercising. 2 appleMoveTime Apple move time A quantity sample type that measures the amount of time the user has spent performing activities that involve full-body movements during the specified day. 2 appleStandHour Apple stand hour A category sample type that counts the number of hours in the day during which the user has stood and moved for at least one minute per hour. 2 appleStandTime Apple stand time A quantity sample type that measures the amount of time the user has spent standing. 2 basalEnergyBurned Basal energyBurned A quantity sample type that measures the resting energy burned by the user. 2 cyclingCadence Cycling cadence Captures the user's cycling pedaling cadence. Each record represents a series of measurements. 2 cyclingFunctionalThresholdPower Cycling functional threshold power A quantity sample type that measures the highest average power output the user can maintain for an hour. 2 cyclingPower Cycling power A quantity sample type that measures power output by the user while cycling. 2 cyclingSpeed Cycling speed A quantity sample type measuring the user's speed while cycling. 2 distance Distance Captures distance travelled by the user since the last reading. 2 elevationGained Elevation gained Captures the elevation gained by the user since the last reading. 2 totalEnergyBurned Total energy burned Captures the user's steps cadence. Each record represents a series of measurements. 2 distanceCycling Distance cycling A quantity sample type that measures the distance the user has moved by cycling. 2 distanceDownhillSnowSports Distance downhill snow sports A quantity sample type that measures the distance the user has traveled while skiing or snowboarding. 2 distanceSwimming Distance swimming A quantity sample type that measures the distance the user has moved while swimming. 2 distanceWalkingRunning Distance walking running A quantity sample type that measures the distance the user has moved by walking or running. 2 distanceWheelchair Distance wheelchair A quantity sample type that measures the distance the user has moved using a wheelchair. 2 flightsClimbed Flights climbed A quantity sample type that measures the number flights of stairs that the user has climbed. 2 lowCardioFitnessEvent Low cardio fitness event An event that indicates the user's VO2 max values consistently fall below a particular aerobic fitness threshold. 2 nikeFuel NikeFuel A quantity sample type that measures the number of NikeFuel points the user has earned. 2 physicalEffort Physical effort A quantity sample type that records an estimate of the energy the user using. 2 power Power Captures the power generated by the user, e.g. during rowing with a power meter. Each record represents a series of measurements. 2 pushCount Push count A quantity sample type that measures the number of pushes that the user has performed while using a wheelchair. 2 runningGroundContactTime Running ground contact time A quantity sample type that measures the amount of time the runner's foot is in contact with the ground while running. 2 runningPower Running power A quantity sample type that measures the rate of work required for the runner to maintain their speed. 2 runningSpeed Running speed A quantity sample type that measures the runner's speed. 2 runningStrideLength Running stride length A quantity sample type that measures the distance covered by a single step while running. 2 runningVerticalOscillation Running vertical oscillation A quantity sample type measuring pelvis vertical range of motion during a single running stride. 2 stepsCadence Steps cadence Captures the user's steps cadence. Each record represents a series of measurements. 2 stepCount Step count A quantity sample type that measures the number of steps the user has taken. 2 speed Speed Captures the user's speed, e.g. during running. Each record represents a series of measurements. 2 swimmingStrokeCount Swimming stroke count A quantity sample type that measures the number of strokes performed while swimming. 2 vo2Max VO2 max A quantity sample that measures the maximal oxygen consumption during exercise. 2 pace Pace Pace at a specific point in time. Will be 0 if the user stops moving, otherwise the value will be in milliseconds/kilometer. 2 moderateActivity Moderate activity Represents moderate (3.0-5.9 MET) activity. 2 vigorousActivity Vigorous activity Represents vigorous (6.0- MET) activity. 2 moderateToVigorousActivity Moderate to vigorous activity Weekly moderate to vigorous physical activity in minutes. 2 met Met 2 metByStandardRmr Met by standard RMR Metabolic equivalent of task (MET) calculated based on either measured, estimated or reported exercise metabolic rate and the standard resting metabolic rate (RMR). 2 crossCountrySkiingSpeed Cross country skiing speed A quantity sample type measuring the user's speed while cross country skiing. 2 distanceCrossCountrySkiing Distance cross country skiing A quantity sample type that measures the distance the user has moved while cross country skiing. 2 paddleSportsSpeed Paddle sports speed A quantity sample type measuring the user's speed during paddle sports. 2 distancePaddleSports Distance paddle sports A quantity sample type that measures the distance the user has moved during paddle sports. 2 rowingSpeed Rowing speed A quantity sample type measuring the user's rowing speed. 2 distanceRowing Distance rowing A quantity sample type measuring the distance the user has rowed. 2 distanceSkatingSports Distance skating sports A quantity sample type that measures the distance the user has skated. 2 estimatedWorkoutEffortScore Estimated workout effort score A quantity sample type that represents estimate of exertion score. 2 workoutEffortScore Workout effort score A quantity sample type that represents exertion score. 1 AlcoholConsumption Alcohol consumption 2 bloodAlcoholContent Blood alcohol content quantity sample type that measures the user's blood alcohol content. 2 numberOfAlcoholicBeverages Number of alcoholic beverages A quantity sample type that measures the number of standard alcoholic drinks that the user has consumed. 1 BodyMeasurements Body measurements 2 appleSleepingWristTemperature Apple sleeping wrist temperature A quantity sample type that records the wrist temperature during sleep. 2 bodyFatPercentage Body fat percentage A quantity sample type that measures the user's body fat percentage. 2 bodyMass Body mass A quantity sample type that measures the user's weight. 2 bodyMassIndex Body mass index A quantity sample type that measures the user's body mass index. 2 height Height A quantity sample type that measures the user's height. 2 hipCircumference Hip circumference A quantity sample type that measures the user's hip circumference. 2 leanBodyMass Lean body mass A quantity sample type that measures the user's lean body mass. 2 waistCircumference Waist circumference A quantity sample type that measures the user's waist circumference. 2 boneMass Bone mass A quantity sample type that measures the user's bone mass 1 Diving Diving 2 underwaterDepth Underwater depth A quantity sample that records a person's depth underwater. 2 waterTemperature Water temperature A quantity sample that records the water temperature. 1 Hearing Hearing 2 environmentalAudioExposure Environmental audio exposure A quantity sample type that measures audio exposure to sounds in the environment. 2 environmentalAudioExposureEvent Environmental audio exposure event A category sample type that records exposure to potentially damaging sounds from the environment. 2 environmentalSoundReduction Environmental sound reduction The environmental sound level reduced while user wearing AirPods Pro and using Active Noise Cancellation or Adaptive Transparency mode. 2 headphoneAudioExposure Headphone audio exposure A quantity sample type that measures audio exposure from headphones. 2 headphoneAudioExposureEvent Headphone audio exposure event A category sample type that records exposure to potentially damaging sounds from headphones. 1 Heart Heart 2 electrocardiogram Electrocardiogram A type that identifies samples containing electrocardiogram data. 2 heartBeatSeries Heart beat series A series sample containing heartbeat data. 1 LabAndTestResults Lab and test results 2 bloodGlucose Blood glucose A quantity sample type that measures the user's blood glucose level. 2 electrodermalActivity Electrodermal activity A quantity sample type that measures electrodermal activity. 2 forcedExpiratoryVolume1 Forced expiratory volume1 A quantity sample type that measures the amount of air that can be forcibly exhaled from the lungs during the first second of a forced exhalation. 2 forcedVitalCapacity Forced vital capacity A quantity sample type that measures the amount of air that can be forcibly exhaled from the lungs after taking the deepest breath possible. 2 inhalerUsage Inhaler usage A quantity sample type that measures the number of puffs the user takes from their inhaler. 2 insulinDelivery Insulin delivery A quantity sample that measures the amount of insulin delivered. 2 numberOfTimesFallen Number of times fallen A quantity sample type that measures the number of times the user fell. 2 peakExpiratoryFlowRate Peak expiratory flow rate A quantity sample type that measures the user's maximum flow rate generated during a forceful exhalation. 2 peripheralPerfusionIndex Peripheral perfusion index A quantity sample type that measures the user's peripheral perfusion index. 2 timeInDaylight Time in daylight A quantity sample type that captures the amount of time the user spent in daylight. 2 inspiratoryTime Inspiratory time The duration of a person's inspiration, either a single measurement, or the result of aggregating several measurements made over time. 2 ventilationCycleTime Ventilation cycle time Represents the duration of a person's complete respiration. 2 minuteVolume Minute volume The volume of gas inhaled or exhaled from a person's lungs per minute. 2 breathCarbonMonoxide Breath carbon monoxide The amount of carbon monoxide gas present in a person's exhaled breath. 1 Mindfulness Mindfulness 2 mindfulSession Mindful session A category sample type for recording a mindful session. 1 Sleep Sleep 2 sleepAnalysis Sleep analysis A category sample type for sleep analysis information. 2 sleepEpisode Sleep episode Represents one sleep episode, which can be the main sleep event (i.e., a night sleep for most people) or a nap. 2 snoreIndex Snore index The number of snore events per hour. 2 snoreEvent Snore event A data type that represents the loudness, duration of snoring, and the posture during snoring. 2 sleepAHI Sleep ahi The number of apnea and hypopnea events recorded per hour of sleep. 2 sleepArousalIndex Sleep arousal index The average number of arousals per hour of sleep. 2 appleSleepingBreathingDisturbances Apple sleeping breathing disturbances A quantity sample type that measures a nightly breathing disturbances. 2 sleepApneaEvent Sleep apnea event A category type that represents sleep apnea event. 1 Mobility Mobility 2 appleWalkingSteadiness Apple walking steadiness A quantity sample type that measures the steadiness of the user's gait. 2 appleWalkingSteadinessEvent Apple walking steadiness event A category sample type that records an incident where the user showed a reduced score for their gait's steadiness. 2 sixMinuteWalkTestDistance Six minute walk test distance A quantity sample type that stores the distance a user can walk during a six-minute walk test. 2 walkingSpeed Walking speed A quantity sample type that measures the user's average speed when walking steadily over flat ground. 2 walkingStepLength Walking step length A quantity sample type that measures the average length of the user's step when walking steadily over flat ground. 2 walkingAsymmetryPercentage Walking asymmetry percentage A quantity sample type that measures the percentage of steps in which one foot moves at a different speed than the other when walking on flat ground. 2 walkingDoubleSupportPercentage Walking double support percentage A quantity sample type that measures the percentage of time when both of the user's feet touch the ground while walking steadily over flat ground. 2 stairAscentSpeed Stair ascent speed A quantity sample type measuring the user's speed while climbing a flight of stairs. 2 stairDescentSpeed Stair descent speed A quantity sample type measuring the user's speed while descending a flight of stairs. 1 Nutrition Nutrition 2 dietaryBiotin Biotin A quantity sample type that measures the amount of biotin (vitamin B7) consumed. 2 dietaryCaffeine Caffeine A quantity sample type that measures the amount of caffeine consumed. 2 dietaryCalcium Calcium A quantity sample type that measures the amount of calcium consumed. 2 dietaryCarbohydrates Carbohydrates A quantity sample type that measures the amount of carbohydrates consumed. 2 dietaryChloride Chloride A quantity sample type that measures the amount of chloride consumed. 2 dietaryCholesterol Cholesterol A quantity sample type that measures the amount of cholesterol consumed. 2 dietaryChromium Chromium A quantity sample type that measures the amount of chromium consumed. 2 dietaryCopper Copper A quantity sample type that measures the amount of copper consumed. 2 dietaryEnergyConsumed Energy consumed A quantity sample type that measures the amount of energy consumed. 2 dietaryEnergyFromFat Energy from fat A quantity sample type that measures the amount of energy form fat. 2 dietaryFatMonounsaturated Fat monounsaturated A quantity sample type that measures the amount of monounsaturated fat consumed. 2 dietaryFatPolyunsaturated Fat polyunsaturated A quantity sample type that measures the amount of polyunsaturated fat consumed. 2 dietaryFatUnsaturated Fat unsaturated A quantity sample type that measures the amount of unsaturated fat consumed. 2 dietaryTransFat Trans fat A quantity sample type that measures the amount of trans fat consumed. 2 dietaryFatSaturated Fat saturated A quantity sample type that measures the amount of saturated fat consumed. 2 dietaryFatTotal Fat total A quantity sample type that measures the total amount of fat consumed. 2 dietaryFiber Fiber A quantity sample type that measures the amount of fiber consumed. 2 dietaryFolateOrFolicAcid Folate or folic acid A quantity sample type that measures the amount of folate (folic acid) consumed. 2 dietaryFolate Folate A quantity sample type that measures the amount of folate consumed. 2 dietaryFolicAcid Folic acid A quantity sample type that measures the amount of folic acid consumed. 2 dietaryIodine Iodine A quantity sample type that measures the amount of iodine consumed. 2 dietaryIron Iron A quantity sample type that measures the amount of iron consumed. 2 dietaryMagnesium Magnesium A quantity sample type that measures the amount of magnesium consumed. 2 dietaryManganese Manganese A quantity sample type that measures the amount of manganese consumed. 2 dietaryMolybdenum Molybdenum A quantity sample type that measures the amount of molybdenum consumed. 2 dietaryNiacin Niacin A quantity sample type that measures the amount of niacin (vitamin B3) consumed. 2 dietaryPantothenicAcid Pantothenic acid A quantity sample type that measures the amount of pantothenic acid (vitamin B5) consumed. 2 dietaryPhosphorus Phosphorus A quantity sample type that measures the amount of phosphorus consumed. 2 dietaryPotassium Potassium A quantity sample type that measures the amount of potassium consumed. 2 dietaryProtein Protein A quantity sample type that measures the amount of protein consumed. 2 dietaryRiboflavin Riboflavin A quantity sample type that measures the amount of riboflavin (vitamin B2) consumed. 2 dietarySelenium Selenium A quantity sample type that measures the amount of selenium consumed. 2 dietarySodium Sodium A quantity sample type that measures the amount of sodium consumed. 2 dietarySugar Sugar A quantity sample type that measures the amount of sugar consumed. 2 dietaryThiamin Thiamin A quantity sample type that measures the amount of thiamin (vitamin B1) consumed. 2 dietaryVitaminA Vitamin a A quantity sample type that measures the amount of vitamin A consumed. 2 dietaryVitaminB12 Dietary vitamin b12 A quantity sample type that measures the amount of cyanocobalamin (vitamin B12) consumed. 2 dietaryVitaminB6 Vitamin b6 A quantity sample type that measures the amount of pyridoxine (vitamin B6) consumed. 2 dietaryVitaminC Vitamin c A quantity sample type that measures the amount of vitamin C consumed. 2 dietaryVitaminD Vitamin d A quantity sample type that measures the amount of vitamin D consumed. 2 dietaryVitaminE Vitamin e A quantity sample type that measures the amount of vitamin E consumed. 2 dietaryVitaminK Vitamin k A quantity sample type that measures the amount of vitamin K consumed. 2 dietaryWater Water A quantity sample type that measures the amount of water consumed. 2 dietaryZinc Zinc A quantity sample type that measures the amount of zinc consumed. 1 ReproductiveHealth Reproductive health 2 basalBodyTemperature Basal body temperature A quantity sample type that records the user's basal body temperature. 2 cervicalMucusQuality Cervical mucus quality A category sample type that records the quality of the user's cervical mucus. 2 contraceptive Contraceptive A category sample type that records the use of contraceptives. 2 intermenstrualBleeding Intermenstrual bleeding A category sample type that records spotting outside the normal menstruation period. 2 irregularMenstrualCycles Irregular menstrual cycles A category sample that indicates an irregular menstrual cycle. 2 infrequentMenstrualCycles Infrequent menstrual cycles A category sample that indicates an infrequent menstrual cycle. 2 lactation Lactation A category type that records lactation. 2 menstrualFlow Menstrual flow A category sample type that records menstrual cycles. 2 menstrualPeriod Menstrual period A category sample type that records menstrual periods. 2 ovulationTestResult Ovulation test result A category sample type that records the result of an ovulation home test. 2 persistentIntermenstrualBleeding Persistent intermenstrual bleeding A category sample that indicates persistent intermenstrual bleeding. 2 pregnancy Pregnancy A category type that records pregnancy. 2 pregnancyTestResult Pregnancy test result A category type that represents the results from a home pregnancy test. 2 progesteroneTestResult Progesterone test result A category type that represents the results from a home progesterone test. 2 prolongedMenstrualPeriods Prolonged menstrual periods A category sample that indicates a prolonged menstrual cycle. 2 sexualActivity Sexual activity A category sample type that records sexual activity. 2 bleedingAfterPregnancy Bleeding after pregnancy A category type that represents bleeding after pregnancy. 2 bleedingDuringPregnancy Bleeding during pregnancy A category type that represents bleeding during pregnancy. 1 SelfCare Self care 2 handwashingEvent Handwashing event A category sample type for handwashing events. 2 toothbrushingEvent Toothbrushing event A category sample type for toothbrushing events. 1 Symptom Symptom 2 abdominalCramps Bdominal cramps A category type that records abdominal cramps as a symptom. 2 acne Acne A category type that records acne as a symptom. 2 appetiteChanges Appetite changes A category type that records changes in appetite as a symptom. 2 bladderIncontinence Bladder incontinence A category type that records bladder incontinence as a symptom. 2 bloating Bloating A category type that records bloating as a symptom. 2 breastPain Breast pain A category type that records breast pain as a symptom. 2 chestTightnessOrPain Chest tightness or pain A category type that records chest tightness or pain as a symptom. 2 chills Chills A category type that records chills as a symptom. 2 constipation Constipation A category type that records constipation as a symptom. 2 coughing Coughing A category type that records coughing as a symptom. 2 diarrhea Diarrhea A category type that records diarrhea as a symptom. 2 dizziness Dizziness A category type that records dizziness as a symptom. 2 drySkin Dry skin A category type that records dry skin as a symptom. 2 fainting Fainting A category type that records fainting as a symptom. 2 fatigue Fatigue A category type that records fatigue as a symptom. 2 fever Fever A category type that records fever as a symptom. 2 generalizedBodyAche Generalized body ache A category type that records body ache as a symptom. 2 hairLoss Hair loss A category type that records hair loss as a symptom. 2 headache Headache A category type that records headache as a symptom. 2 heartburn Heartburn A category type that records heartburn as a symptom. 2 hotFlashes Hot flashes A category type that records hot flashes as a symptom. 2 lossOfSmell Loss of smell A category type that records loss of smell as a symptom. 2 lossOfTaste Loss of taste A category type that records loss of taste as a symptom. 2 lowerBackPain Lower back pain A category type that records lower back pain as a symptom. 2 memoryLapse Memory lapse A category type that records memory lapse as a symptom. 2 moodChanges Mood changes A category type that records mood changes as a symptom. 2 nausea Nausea A category type that records nausea as a symptom. 2 nightSweats Night sweats A category type that records night sweats as a symptom. 2 pelvicPain Pelvic pain A category type that records pelvic pain as a symptom. 2 rapidPoundingOrFlutteringHeartbeat Rapid pounding or fluttering heartbeat A category type that records a rapid, pounding, or fluttering heartbeat as a symptom. 2 runnyNose Runny nose A category type that records runny nose as a symptom. 2 shortnessOfBreath Shortness of breath A category type that records shortness of breath as a symptom. 2 sinusCongestion Sinus congestion A category type that records sinus congestion as a symptom. 2 skippedHeartbeat Skipped heartbeat A category type that records skipped heartbeat as a symptom. 2 sleepChanges Sleep changes A category type that records sleep changes as a symptom. 2 soreThroat Sore throat A category type that records sore throat as a symptom. 2 vaginalDryness Vaginal dryness A category type that records vaginal dryness as a symptom. 2 vomiting Vomiting A category type that records vomiting as a symptom. 2 wheezing Wheezing A category type that records wheezing as a symptom. 1 UVExposure Uv exposure 2 uvExposure Uv exposure A quantity sample type that measures the user's exposure to UV radiation. 1 VitalSigns Vital signs 2 atrialFibrillationBurden Atrial fibrillation burden A quantity type that measures an estimate of the percentage of time a person's heart shows signs of atrial fibrillation (AFib) while wearing Apple Watch. 2 bloodPressure Blood pressure A correlation sample that combines a systolic sample and a diastolic sample into a single blood pressure reading. 2 bloodPressureDiastolic Blood pressure diastolic A quantity sample type that measures the user's diastolic blood pressure. 2 bloodPressureSystolic Blood pressure systolic A quantity sample type that measures the user's systolic blood pressure. 2 bodyTemperature Body temperature A quantity sample type that measures the user's body temperature. 2 heartRate Heart rate A quantity sample type that measures the user's heart rate. 2 heartRateVariabilitySDNN Heart rate variability sdnn A quantity sample type that measures the standard deviation of heartbeat intervals. 2 heartRateRecoveryOneMinute Heart rate recovery one minute A quantity sample that records the reduction in heart rate from the peak exercise rate to the rate one minute after exercising ended. 2 highHeartRateEvent High heart rate event A category sample type for high heart rate events. 2 irregularHeartRhythmEvent Irregular heart rhythm event A category sample type for irregular heart rhythm events. 2 lowHeartRateEvent Low heart rate event A category sample type for low heart rate events. 2 oxygenSaturation Oxygen saturation A quantity sample type that measures the user's oxygen saturation. 2 respiratoryRate Respiratory rate A quantity sample type that measures the user's respiratory rate. 2 restingHeartRate Resting heart rate A quantity sample type that measures the user's resting heart rate. 2 walkingHeartRateAverage Walking heart rate average A quantity sample type that measures the user's heart rate while walking. 2 rrInterval Rr interval The time period between successive R waves. 1 WorkoutActivity Workout activity 2 americanFootball American football The constant for playing American football. 2 archery Archery The constant for shooting archery. 2 australianFootball Australian football The constant for playing Australian football. 2 badminton Badminton The constant for playing badminton. 2 barre Barre The constant for barre workout. 2 baseball Baseball The constant for playing baseball. 2 basketball Basketball The constant for playing basketball. 2 bowling Bowling The constant for bowling. 2 boxing Boxing The constant for boxing. 2 cardioDance Cardio dance The constant for cardiovascular dance workouts. 2 climbing Climbing The constant for climbing. 2 cooldown Cooldown The constant for low intensity stretching and mobility exercises following a more vigorous workout. 2 coreTraining Core training The constant for core training. 2 cricket Cricket The constant for playing cricket. 2 crossCountrySkiing Cross country skiing The constant for cross country skiing. 2 crossTraining Cross training The constant for exercise that includes any mixture of cardio, strength, and/or flexibility training. 2 curling Curling The constant for curling. 2 cycling Cycling The constant for cycling. 2 dance Dance (Deprecated) The constant for dancing. 2 danceInspiredTraining Dance inspired training (Deprecated) The constant for workouts inspired by dance, including Pilates, Barre, and Feldenkrais. 2 discSports Disc sports The constant for playing disc sports such as Ultimate and Disc Golf. 2 downhillSkiing Downhill skiing The constant for downhill skiing. 2 elliptical Elliptical The constant for workouts on an elliptical machine. 2 equestrianSports Equestrian sports The constant for activities that involve riding a horse, including polo, horse racing, and horse riding. 2 fencing Fencing The constant for fencing. 2 fishing Fishing The constant for fishing. 2 fitnessGaming Fitness gaming The constant for playing fitness-based video games. 2 flexibility Flexibility The constant for a flexibility workout. 2 functionalStrengthTraining Functional strength training The constant for strength training, primarily with free weights and body weight. 2 golf Golf The constant for playing golf. 2 gymnastics Gymnastics Performing gymnastics. 2 handball Handball The constant for playing handball. 2 handCycling Hand cycling The constant for hand cycling. 2 highIntensityIntervalTraining High intensity interval training The constant for high intensity interval training. 2 hiking Hiking The constant for hiking. 2 hockey Hockey The constant for playing hockey, including ice hockey, field hockey, and related sports. 2 hunting Hunting The constant for hunting. 2 jumpRope Jump rope The constant for jumping rope. 2 kickboxing Kickboxing The constant for kickboxing. 2 lacrosse Lacrosse The constant for playing lacrosse. 2 martialArts Martial arts The constant for practicing martial arts. 2 mindAndBody Mind and body The constant for performing activities like walking meditation, Gyrotonic exercise, and Qigong. 2 mixedCardio Mixed cardio The constant for workouts that mix a variety of cardio exercise machines or modalities. 2 mixedMetabolicCardioTraining Mixed metabolic cardio training The constant for performing any mix of cardio-focused exercises. 2 other Other The constant for a workout that does not match any of the other workout activity types. 2 paddleSports Paddle sports The constant for canoeing, kayaking, paddling an outrigger, paddling a stand-up paddle board, and related sports. 2 pickleball Pickleball The constant for playing pickleball. 2 pilates Pilates The constant for a pilates workout. 2 play Play The constant for play-based activities like tag, dodgeball, hopscotch, tetherball, and playing on a jungle gym. 2 preparationAndRecovery Preparation and recovery The constant for warm-up and therapeutic activities like foam rolling and stretching. 2 racquetball Racquetball The constant for playing racquetball. 2 rowing Rowing The constant for rowing. 2 rugby Rugby The constant for playing rugby. 2 running Running The constant for running and jogging. 2 sailing Sailing The constant for sailing. 2 skatingSports Skating sports The constant for skating activities, including ice skating, speed skating, inline skating, and skateboarding. 2 snowboarding Snowboarding The constant for snowboarding. 2 snowSports Snow sports The constant for a variety of snow sports, including sledding, snowmobiling, or building a snowman. 2 soccer Soccer The constant for playing soccer. 2 socialDance Social dance The constant for dancing with a partner or partners, such as swing, salsa, or folk dances. 2 softball Softball The constant for playing softball. 2 squash Squash The constant for playing squash. 2 stairClimbing Stair climbing The constant for workouts using a stair climbing machine. 2 stairs Stairs The constant for running, walking, or other drills using stairs (for example, in a stadium or inside a multilevel building). 2 stepTraining Step training The constant for training using a step bench. 2 surfingSports Surfing sports The constant for a variety of surf sports, including surfing, kite surfing, and wind surfing. 2 swimBikeRun Swim bike run The constant for multisport activities like triathlons. 2 swimming Swimming The constant for swimming. 2 tableTennis Table tennis The constant for playing table tennis. 2 taiChi Tai chi The constant for tai chi. 2 tennis Tennis The constant for playing tennis. 2 trackAndField Track and field Participating in track and field events, including shot put, javelin, pole vaulting, and related sports. 2 traditionalStrengthTraining Traditional strength training The constant for strength training exercises primarily using machines or free weights. 2 transition Transition A constant for the transition time between activities in a multisport workout. 2 underwaterDiving Underwater diving The constant for underwater diving. 2 volleyball Volleyball The constant for playing volleyball. 2 walking Walking The constant for walking. 2 waterFitness Water fitness The constant for aerobic exercise performed in shallow water. 2 waterPolo Water polo The constant for playing water polo. 2 waterSports Water sports The constant for a variety of water sports, including water skiing, wake boarding, and related activities. 2 wheelchairRunPace Wheelchair run pace The constant for wheelchair workout at running pace. 2 wheelchairWalkPace Wheelchair walk pace The constant for a wheelchair workout at walking pace. 2 wrestling Wrestling The constant for wrestling. 2 yoga Yoga The constant for practicing yoga. 2 backExtension Back extension The constant for back Extension. 2 barbellShoulderPress Barbell shoulder press The constant for barbell shoulder press. 2 benchPress Bench press The constant for bench press. 2 benchSitUp Bench sit up The constant for bench sit up. 2 biking Biking The constant for biking. 2 bikingStationary Biking stationary The constant for biking stationary. 2 bootCamp Boot camp The constant for boot camp. 2 burpee Burpee The constant for burpee. 2 calisthenics Calisthenics The constant for calisthenics. 2 crunch Crunch The constant for crunch. 2 deadlift Deadlift The constant for deadlift. 2 dumbbellCurlLeftArm Dumbbell curl left arm The constant for dumbbell curl left arm. 2 dumbbellCurlRightArm Dumbbell curl right arm The constant for dumbbell curl right arm. 2 dumbbellFrontRaise Dumbbell front raise The constant for dumbbell front raise. 2 dumbbellLateralRaise Dumbbell lateral raise The constant for dumbbell lateral raise. 2 dumbbellTricepsExtensionLeftArm Dumbbell triceps extension left arm The constant for dumbbell triceps extension left arm. 2 dumbbellTricepsExtensionRightArm Dumbbell triceps extension right arm The constant for dumbbell triceps extension right arm. 2 dumbbellTricepsExtensionTwoArm Dumbbell triceps extension two arm The constant for dumbbell triceps extension two arm. 2 exerciseClass Exercise class The constant for exercise class. 2 forwardTwist Forward twist The constant for forward twist. 2 frisbeeDisc Frisbee disc The constant for frisbee disc. 2 guidedBreathing Guided breathing The constant for guided breathing. 2 iceHockey Ice hockey The constant for ice hockey. 2 iceSkating Ice skating The constant for ice skating. 2 jumpingJack Jumping jack The constant for jumping jack. 2 latPullDown Lat pull down The constant for lat pull down. 2 lunge Lunge The constant for lunge. 2 meditation Meditation The constant for meditation. 2 paraGliding Para gliding The constant for para gliding. 2 plank Plank The constant for plank. 2 rockClimbing Rock climbing The constant for rock climbing. 2 rollerHockey Roller hockey The constant for roller hockey. 2 rowingMachine Rowing machine The constant for rowing machine. 2 runningTreadmill Running treadmill The constant for running treadmill. 2 scubaDiving Scuba diving The constant for scuba diving. 2 skiing Skiing The constant for skiing. 2 snowshoeing Snowshoeing The constant for snowshoeing. 2 squat Squat The constant for squat. 2 strengthTraining Strength training The constant for strength training. 2 stretching Stretching The constant for stretching. 2 swimmingOpenWater Swimming open water The constant for swimming open water. 2 swimmingPool Swimming pool The constant for swimming pool. 2 upperTwist Upper twist The constant for upper twist. 2 weightlifting Weightlifting The constant for weightlifting. 2 wheelchair Wheelchair The constant for wheelchair. 2 workout Workout The constant for workout. 2 armCurl Arm curl The constant for arm curl exercises targeting the biceps. 2 ballSlam Ball slam The constant for full-body workouts using a slam ball. 2 doubleArmTricepsExtension Double arm triceps extension The constant for triceps extension exercises using both arms. 2 dumbbellRow Dumbbell row The constant for back-strengthening exercises using dumbbells. 2 frontRaise Front raise The constant for shoulder workouts lifting weights in front of the body. 2 hipThrust Hip thrust The constant for glute-focused exercises involving hip elevation. 2 hulaHoop Hula hoop The constant for core and cardio workouts using a hula hoop. 2 kettlebellSwing Kettlebell swing The constant for dynamic full-body workouts using a kettlebell. 2 lateralRaise Lateral raise The constant for shoulder workouts lifting weights to the sides. 2 legCurl Leg curl The constant for hamstring-focused leg curl exercises. 2 legExtension Leg extension The constant for quadriceps-focused leg extension exercises. 2 legPress Leg press The constant for lower-body strength training using a leg press machine. 2 legRaise Leg raise The constant for abdominal and hip flexor exercises involving leg lifts. 2 mountainClimber Mountain climber The constant for cardio and core workouts simulating climbing motion. 2 otherWorkout Other workout The constant for workouts not categorized under specific types. 2 pause Pause The constant for temporary pauses during a workout session. 2 pullUp Pull-up The constant for upper-body strength exercises involving pulling up the body. 2 punch Punch The constant for boxing-style workouts involving punching motions. 2 rest Rest The constant for rest periods between or after workouts. 2 shoulderPress Shoulder press The constant for overhead pressing exercises targeting the shoulders. 2 singleArmTricepsExtension Single arm triceps extension The constant for triceps extension exercises using one arm. 2 sitUp Sit-up The constant for abdominal exercises involving torso lifts. 2 stairClimbingMachine Stair climbing The constant for workouts using a stair climbing machine. 2 swimmingBackstroke Swimming backstroke The constant for swimming using the backstroke technique. 2 swimmingBreaststroke Swimming breaststroke The constant for swimming using the breaststroke technique. 2 swimmingButterfly Swimming butterfly The constant for swimming using the butterfly stroke. 2 swimmingFreestyle Swimming freestyle The constant for swimming using the freestyle stroke. 2 swimmingMixed Swimming mixed The constant for swimming using a combination of strokes. 2 swimmingOther Swimming other The constant for swimming using other or unspecified techniques. 1 Audiogram Audiogram 2 hearingSensitivity Hearing sensitivity A pair of frequencies and left/right ear sensitivity data to represent the patient's hearing sensitivity for each frequency. 1 food Food 1 medicationAdherence Medication adherence The degree to which a patient correctly follows medical advice, particularly in relation to taking prescribed medication. 1 Mind Mind 2 stateOfMind State of Mind Momentary emotions and daily moods. 2 gad7 GAD-7 assessment The Generalized Anxiety Disorder 7-item scale. 2 phq9 PHQ-9 assessment The nine-item Patient Health Questionnaire.
A quantity sample type that measures the amount of active energy the user has burned.
A quantity sample type that measures the amount of time the user spent exercising.
A quantity sample type that measures the amount of time the user has spent performing activities that involve full-body movements during the specified day.
A category sample type that counts the number of hours in the day during which the user has stood and moved for at least one minute per hour.
A quantity sample type that measures the amount of time the user has spent standing.
A quantity sample type that measures the resting energy burned by the user.
Captures the user's cycling pedaling cadence. Each record represents a series of measurements.
A quantity sample type that measures the highest average power output the user can maintain for an hour.
A quantity sample type that measures power output by the user while cycling.
A quantity sample type measuring the user's speed while cycling.
Captures distance travelled by the user since the last reading.
Captures the elevation gained by the user since the last reading.
Captures the user's steps cadence. Each record represents a series of measurements.
A quantity sample type that measures the distance the user has moved by cycling.
A quantity sample type that measures the distance the user has traveled while skiing or snowboarding.
A quantity sample type that measures the distance the user has moved while swimming.
A quantity sample type that measures the distance the user has moved by walking or running.
A quantity sample type that measures the distance the user has moved using a wheelchair.
A quantity sample type that measures the number flights of stairs that the user has climbed.
An event that indicates the user's VO2 max values consistently fall below a particular aerobic fitness threshold.
A quantity sample type that measures the number of NikeFuel points the user has earned.
A quantity sample type that records an estimate of the energy the user using.
Captures the power generated by the user, e.g. during rowing with a power meter. Each record represents a series of measurements.
A quantity sample type that measures the number of pushes that the user has performed while using a wheelchair.
A quantity sample type that measures the amount of time the runner's foot is in contact with the ground while running.
A quantity sample type that measures the rate of work required for the runner to maintain their speed.
A quantity sample type that measures the runner's speed.
A quantity sample type that measures the distance covered by a single step while running.
A quantity sample type measuring pelvis vertical range of motion during a single running stride.
A quantity sample type that measures the number of steps the user has taken.
Captures the user's speed, e.g. during running. Each record represents a series of measurements.
A quantity sample type that measures the number of strokes performed while swimming.
A quantity sample that measures the maximal oxygen consumption during exercise.
Pace at a specific point in time. Will be 0 if the user stops moving, otherwise the value will be in milliseconds/kilometer.
Represents moderate (3.0-5.9 MET) activity.
Represents vigorous (6.0- MET) activity.
Weekly moderate to vigorous physical activity in minutes.
Metabolic equivalent of task (MET) calculated based on either measured, estimated or reported exercise metabolic rate and the standard resting metabolic rate (RMR).
A quantity sample type measuring the user's speed while cross country skiing.
A quantity sample type that measures the distance the user has moved while cross country skiing.
A quantity sample type measuring the user's speed during paddle sports.
A quantity sample type that measures the distance the user has moved during paddle sports.
A quantity sample type measuring the user's rowing speed.
A quantity sample type measuring the distance the user has rowed.
A quantity sample type that measures the distance the user has skated.
A quantity sample type that represents estimate of exertion score.
A quantity sample type that represents exertion score.
quantity sample type that measures the user's blood alcohol content.
A quantity sample type that measures the number of standard alcoholic drinks that the user has consumed.
A quantity sample type that records the wrist temperature during sleep.
A quantity sample type that measures the user's body fat percentage.
A quantity sample type that measures the user's weight.
A quantity sample type that measures the user's body mass index.
A quantity sample type that measures the user's height.
A quantity sample type that measures the user's hip circumference.
A quantity sample type that measures the user's lean body mass.
A quantity sample type that measures the user's waist circumference.
A quantity sample type that measures the user's bone mass
A quantity sample that records a person's depth underwater.
A quantity sample that records the water temperature.
A quantity sample type that measures audio exposure to sounds in the environment.
A category sample type that records exposure to potentially damaging sounds from the environment.
The environmental sound level reduced while user wearing AirPods Pro and using Active Noise Cancellation or Adaptive Transparency mode.
A quantity sample type that measures audio exposure from headphones.
A category sample type that records exposure to potentially damaging sounds from headphones.
A type that identifies samples containing electrocardiogram data.
A series sample containing heartbeat data.
A quantity sample type that measures the user's blood glucose level.
A quantity sample type that measures electrodermal activity.
A quantity sample type that measures the amount of air that can be forcibly exhaled from the lungs during the first second of a forced exhalation.
A quantity sample type that measures the amount of air that can be forcibly exhaled from the lungs after taking the deepest breath possible.
A quantity sample type that measures the number of puffs the user takes from their inhaler.
A quantity sample that measures the amount of insulin delivered.
A quantity sample type that measures the number of times the user fell.
A quantity sample type that measures the user's maximum flow rate generated during a forceful exhalation.
A quantity sample type that measures the user's peripheral perfusion index.
A quantity sample type that captures the amount of time the user spent in daylight.
The duration of a person's inspiration, either a single measurement, or the result of aggregating several measurements made over time.
Represents the duration of a person's complete respiration.
The volume of gas inhaled or exhaled from a person's lungs per minute.
The amount of carbon monoxide gas present in a person's exhaled breath.
A category sample type for recording a mindful session.
A category sample type for sleep analysis information.
Represents one sleep episode, which can be the main sleep event (i.e., a night sleep for most people) or a nap.
A data type that represents the loudness, duration of snoring, and the posture during snoring.
The number of apnea and hypopnea events recorded per hour of sleep.
The average number of arousals per hour of sleep.
A quantity sample type that measures a nightly breathing disturbances.
A category type that represents sleep apnea event.
A quantity sample type that measures the steadiness of the user's gait.
A category sample type that records an incident where the user showed a reduced score for their gait's steadiness.
A quantity sample type that stores the distance a user can walk during a six-minute walk test.
A quantity sample type that measures the user's average speed when walking steadily over flat ground.
A quantity sample type that measures the average length of the user's step when walking steadily over flat ground.
A quantity sample type that measures the percentage of steps in which one foot moves at a different speed than the other when walking on flat ground.
A quantity sample type that measures the percentage of time when both of the user's feet touch the ground while walking steadily over flat ground.
A quantity sample type measuring the user's speed while climbing a flight of stairs.
A quantity sample type measuring the user's speed while descending a flight of stairs.
A quantity sample type that measures the amount of biotin (vitamin B7) consumed.
A quantity sample type that measures the amount of caffeine consumed.
A quantity sample type that measures the amount of calcium consumed.
A quantity sample type that measures the amount of carbohydrates consumed.
A quantity sample type that measures the amount of chloride consumed.
A quantity sample type that measures the amount of cholesterol consumed.
A quantity sample type that measures the amount of chromium consumed.
A quantity sample type that measures the amount of copper consumed.
A quantity sample type that measures the amount of energy consumed.
A quantity sample type that measures the amount of energy form fat.
A quantity sample type that measures the amount of monounsaturated fat consumed.
A quantity sample type that measures the amount of polyunsaturated fat consumed.
A quantity sample type that measures the amount of unsaturated fat consumed.
A quantity sample type that measures the amount of trans fat consumed.
A quantity sample type that measures the amount of saturated fat consumed.
A quantity sample type that measures the total amount of fat consumed.
A quantity sample type that measures the amount of fiber consumed.
A quantity sample type that measures the amount of folate (folic acid) consumed.
A quantity sample type that measures the amount of folate consumed.
A quantity sample type that measures the amount of folic acid consumed.
A quantity sample type that measures the amount of iodine consumed.
A quantity sample type that measures the amount of iron consumed.
A quantity sample type that measures the amount of magnesium consumed.
A quantity sample type that measures the amount of manganese consumed.
A quantity sample type that measures the amount of molybdenum consumed.
A quantity sample type that measures the amount of niacin (vitamin B3) consumed.
A quantity sample type that measures the amount of pantothenic acid (vitamin B5) consumed.
A quantity sample type that measures the amount of phosphorus consumed.
A quantity sample type that measures the amount of potassium consumed.
A quantity sample type that measures the amount of protein consumed.
A quantity sample type that measures the amount of riboflavin (vitamin B2) consumed.
A quantity sample type that measures the amount of selenium consumed.
A quantity sample type that measures the amount of sodium consumed.
A quantity sample type that measures the amount of sugar consumed.
A quantity sample type that measures the amount of thiamin (vitamin B1) consumed.
A quantity sample type that measures the amount of vitamin A consumed.
A quantity sample type that measures the amount of cyanocobalamin (vitamin B12) consumed.
A quantity sample type that measures the amount of pyridoxine (vitamin B6) consumed.
A quantity sample type that measures the amount of vitamin C consumed.
A quantity sample type that measures the amount of vitamin D consumed.
A quantity sample type that measures the amount of vitamin E consumed.
A quantity sample type that measures the amount of vitamin K consumed.
A quantity sample type that measures the amount of water consumed.
A quantity sample type that measures the amount of zinc consumed.
A quantity sample type that records the user's basal body temperature.
A category sample type that records the quality of the user's cervical mucus.
A category sample type that records the use of contraceptives.
A category sample type that records spotting outside the normal menstruation period.
A category sample that indicates an irregular menstrual cycle.
A category sample that indicates an infrequent menstrual cycle.
A category sample type that records menstrual cycles.
A category sample type that records menstrual periods.
A category sample type that records the result of an ovulation home test.
A category sample that indicates persistent intermenstrual bleeding.
A category type that represents the results from a home pregnancy test.
A category type that represents the results from a home progesterone test.
A category sample that indicates a prolonged menstrual cycle.
A category sample type that records sexual activity.
A category type that represents bleeding after pregnancy.
A category type that represents bleeding during pregnancy.
A category sample type for handwashing events.
A category sample type for toothbrushing events.
A category type that records abdominal cramps as a symptom.
A category type that records acne as a symptom.
A category type that records changes in appetite as a symptom.
A category type that records bladder incontinence as a symptom.
A category type that records bloating as a symptom.
A category type that records breast pain as a symptom.
A category type that records chest tightness or pain as a symptom.
A category type that records chills as a symptom.
A category type that records constipation as a symptom.
A category type that records coughing as a symptom.
A category type that records diarrhea as a symptom.
A category type that records dizziness as a symptom.
A category type that records dry skin as a symptom.
A category type that records fainting as a symptom.
A category type that records fatigue as a symptom.
A category type that records fever as a symptom.
A category type that records body ache as a symptom.
A category type that records hair loss as a symptom.
A category type that records headache as a symptom.
A category type that records heartburn as a symptom.
A category type that records hot flashes as a symptom.
A category type that records loss of smell as a symptom.
A category type that records loss of taste as a symptom.
A category type that records lower back pain as a symptom.
A category type that records memory lapse as a symptom.
A category type that records mood changes as a symptom.
A category type that records nausea as a symptom.
A category type that records night sweats as a symptom.
A category type that records pelvic pain as a symptom.
A category type that records a rapid, pounding, or fluttering heartbeat as a symptom.
A category type that records runny nose as a symptom.
A category type that records shortness of breath as a symptom.
A category type that records sinus congestion as a symptom.
A category type that records skipped heartbeat as a symptom.
A category type that records sleep changes as a symptom.
A category type that records sore throat as a symptom.
A category type that records vaginal dryness as a symptom.
A category type that records vomiting as a symptom.
A category type that records wheezing as a symptom.
A quantity sample type that measures the user's exposure to UV radiation.
A quantity type that measures an estimate of the percentage of time a person's heart shows signs of atrial fibrillation (AFib) while wearing Apple Watch.
A correlation sample that combines a systolic sample and a diastolic sample into a single blood pressure reading.
A quantity sample type that measures the user's diastolic blood pressure.
A quantity sample type that measures the user's systolic blood pressure.
A quantity sample type that measures the user's body temperature.
A quantity sample type that measures the user's heart rate.
A quantity sample type that measures the standard deviation of heartbeat intervals.
A quantity sample that records the reduction in heart rate from the peak exercise rate to the rate one minute after exercising ended.
A category sample type for high heart rate events.
A category sample type for irregular heart rhythm events.
A category sample type for low heart rate events.
A quantity sample type that measures the user's oxygen saturation.
A quantity sample type that measures the user's respiratory rate.
A quantity sample type that measures the user's resting heart rate.
A quantity sample type that measures the user's heart rate while walking.
The time period between successive R waves.
The constant for playing American football.
The constant for playing Australian football.
The constant for cardiovascular dance workouts.
The constant for low intensity stretching and mobility exercises following a more vigorous workout.
The constant for exercise that includes any mixture of cardio, strength, and/or flexibility training.
(Deprecated) The constant for workouts inspired by dance, including Pilates, Barre, and Feldenkrais.
The constant for playing disc sports such as Ultimate and Disc Golf.
The constant for workouts on an elliptical machine.
The constant for activities that involve riding a horse, including polo, horse racing, and horse riding.
The constant for playing fitness-based video games.
The constant for strength training, primarily with free weights and body weight.
The constant for high intensity interval training.
The constant for playing hockey, including ice hockey, field hockey, and related sports.
The constant for practicing martial arts.
The constant for performing activities like walking meditation, Gyrotonic exercise, and Qigong.
The constant for workouts that mix a variety of cardio exercise machines or modalities.
The constant for performing any mix of cardio-focused exercises.
The constant for a workout that does not match any of the other workout activity types.
The constant for canoeing, kayaking, paddling an outrigger, paddling a stand-up paddle board, and related sports.
The constant for play-based activities like tag, dodgeball, hopscotch, tetherball, and playing on a jungle gym.
The constant for warm-up and therapeutic activities like foam rolling and stretching.
The constant for skating activities, including ice skating, speed skating, inline skating, and skateboarding.
The constant for a variety of snow sports, including sledding, snowmobiling, or building a snowman.
The constant for dancing with a partner or partners, such as swing, salsa, or folk dances.
The constant for workouts using a stair climbing machine.
The constant for running, walking, or other drills using stairs (for example, in a stadium or inside a multilevel building).
The constant for training using a step bench.
The constant for a variety of surf sports, including surfing, kite surfing, and wind surfing.
The constant for multisport activities like triathlons.
Participating in track and field events, including shot put, javelin, pole vaulting, and related sports.
The constant for strength training exercises primarily using machines or free weights.
A constant for the transition time between activities in a multisport workout.
The constant for aerobic exercise performed in shallow water.
The constant for a variety of water sports, including water skiing, wake boarding, and related activities.
The constant for wheelchair workout at running pace.
The constant for a wheelchair workout at walking pace.
The constant for barbell shoulder press.
The constant for dumbbell curl left arm.
The constant for dumbbell curl right arm.
The constant for dumbbell lateral raise.
The constant for dumbbell triceps extension left arm.
The constant for dumbbell triceps extension right arm.
The constant for dumbbell triceps extension two arm.
The constant for arm curl exercises targeting the biceps.
The constant for full-body workouts using a slam ball.
The constant for triceps extension exercises using both arms.
The constant for back-strengthening exercises using dumbbells.
The constant for shoulder workouts lifting weights in front of the body.
The constant for glute-focused exercises involving hip elevation.
The constant for core and cardio workouts using a hula hoop.
The constant for dynamic full-body workouts using a kettlebell.
The constant for shoulder workouts lifting weights to the sides.
The constant for hamstring-focused leg curl exercises.
The constant for quadriceps-focused leg extension exercises.
The constant for lower-body strength training using a leg press machine.
The constant for abdominal and hip flexor exercises involving leg lifts.
The constant for cardio and core workouts simulating climbing motion.
The constant for workouts not categorized under specific types.
The constant for temporary pauses during a workout session.
The constant for upper-body strength exercises involving pulling up the body.
The constant for boxing-style workouts involving punching motions.
The constant for rest periods between or after workouts.
The constant for overhead pressing exercises targeting the shoulders.
The constant for triceps extension exercises using one arm.
The constant for abdominal exercises involving torso lifts.
The constant for swimming using the backstroke technique.
The constant for swimming using the breaststroke technique.
The constant for swimming using the butterfly stroke.
The constant for swimming using the freestyle stroke.
The constant for swimming using a combination of strokes.
The constant for swimming using other or unspecified techniques.
A pair of frequencies and left/right ear sensitivity data to represent the patient's hearing sensitivity for each frequency.
The degree to which a patient correctly follows medical advice, particularly in relation to taking prescribed medication.
The Generalized Anxiety Disorder 7-item scale.
The nine-item Patient Health Questionnaire.