• Include these codes as defined in https://fevir.net/sevco version 📍2.0

  Code	Display	Definition	Definition (core metadata concept)	Synonym (core metadata concept)
  STATO:0000668	absolute value	A statistic that represents the distance of a value from zero.	A statistic that represents the distance of a value from zero.
  STATO:0000047	count	A statistic that represents the number of instances or occurrences of something.	A statistic that represents the number of instances or occurrences of something.
  STATO:0000669	sum	A statistic that represents the result of adding all the values in a collection of values.	A statistic that represents the result of adding all the values in a collection of values.	total
  STATO:0000151	maximum observed value	A statistic that represents the largest non-null value in a collection of values that can be ordered by magnitude.	A statistic that represents the largest non-null value in a collection of values that can be ordered by magnitude.
  STATO:0000150	minimum observed value	A statistic that represents the smallest non-null value in a collection of values that can be ordered by magnitude.	A statistic that represents the smallest non-null value in a collection of values that can be ordered by magnitude.
  STATO:0000666	maximum possible value	A statistic that represents the largest value that could occur.	A statistic that represents the largest value that could occur.
  STATO:0000667	minimum possible value	A statistic that represents the smallest value that could occur.	A statistic that represents the smallest value that could occur.
  STATO:0000291	quantile	A statistic that represents the value for which the number of data points at or below it constitutes a specific portion of the total number of data points.	A statistic that represents the value for which the number of data points at or below it constitutes a specific portion of the total number of data points.
  STATO:0000613	difference	A statistic that is a subtraction of one quantity from another.	A statistic that is a subtraction of one quantity from another.	delta
  STATO:0000573	mean	A measure of central tendency calculated as the sum of a set of values divided by the number of values in the set.	A measure of central tendency calculated as the sum of a set of values divided by the number of values in the set.	statistical mean
  STATO:0000664	mean of differences	A mean of values in which each value is the subtraction of one quantity from another.	A mean of values in which each value is the subtraction of one quantity from another.	average difference
  STATO:0000658	mean time-to-event	A mean of values in which each value is the duration of time between the start of observation and the occurrence of an event.	A mean of values in which each value is the duration of time between the start of observation and the occurrence of an event.	mean TTE
  STATO:0000396	geometric mean	A measure of central tendency calculated as the nth root of the product of all of the observations in a data set (n being the number of all observations).	A measure of central tendency calculated as the nth root of the product of all of the observations in a data set (n being the number of all observations).
  STATO:0000574	median	A measure of central tendency equal to the middle value (or mean of the two middle values) of a set of ordered data.	A measure of central tendency equal to the middle value (or mean of the two middle values) of a set of ordered data.	middle value
  STATO:0000659	median time-to-event	A median of values in which each value is the duration of time between the start of observation and the occurrence of an event.	A median of values in which each value is the duration of time between the start of observation and the occurrence of an event.	median TTE
  STATO:0000033	mode	A measure of central tendency that is the most frequently occurring value in a data set. If no value is repeated, there is no mode. If more than one value occurs with the same greatest frequency, each of these values is a mode.	A measure of central tendency that is the most frequently occurring value in a data set. If no value is repeated, there is no mode. If more than one value occurs with the same greatest frequency, each of these values is a mode.	most frequent value
  STATO:0000397	harmonic mean	A measure of central tendency calculated by dividing the total number of observations by the sum of the reciprocals of each observed value.	A measure of central tendency calculated by dividing the total number of observations by the sum of the reciprocals of each observed value.
  STATO:0000293	percentile	A quantile in which the specific portion of the number of data points is expressed as a percentage.	A quantile in which the specific portion of the number of data points is expressed as a percentage.	%ile
  STATO:0000292	decile	A quantile in which the specific portion of the number of data points is expressed as a number of tenths.	A quantile in which the specific portion of the number of data points is expressed as a number of tenths.
  STATO:0000152	quartile	A quantile in which the specific portion of the number of data points is expressed as a number of fourths.	A quantile in which the specific portion of the number of data points is expressed as a number of fourths.
  STATO:0000167	first quartile	A quantile for which the number of data points at or below it constitutes a 25% of the total number of data points.	A quantile for which the number of data points at or below it constitutes a 25% of the total number of data points.
  STATO:0000170	third quartile	A quantile for which the number of data points at or below it constitutes a 75% of the total number of data points.	A quantile for which the number of data points at or below it constitutes a 75% of the total number of data points.
  STATO:0000614	absolute difference	A statistic that is a subtraction of one quantity from another, with no modification of the resulting value.	A statistic that is a subtraction of one quantity from another, with no modification of the resulting value.
  STATO:0000616	count difference	A statistic that is a subtraction of one count from another.	A statistic that is a subtraction of one count from another.	number difference
  STATO:0000457	difference in means	A statistic that is a subtraction of one mean from another.	A statistic that is a subtraction of one mean from another.	difference of means
  STATO:0000617	difference in medians	A statistic that is a subtraction of one median from another.	A statistic that is a subtraction of one median from another.	difference of medians
  STATO:0000424	risk difference	A measure of association that is the subtraction of the risk of an event in one group from the risk of the same event in another group.	A measure of association that is the subtraction of the risk of an event in one group from the risk of the same event in another group.	ARD
  STATO:0000665	difference-in-differences	A statistic that is a subtraction of one difference from another.	A statistic that is a subtraction of one difference from another.	difference in differences
  STATO:0000615	relative difference	A statistic that is a difference between 1 and a ratio of the two quantities being compared.	A statistic that is a difference between 1 and a ratio of the two quantities being compared.
  STATO:0000625	relative mean difference	A statistic that is a difference between 1 and a ratio of the two mean values being compared.	A statistic that is a difference between 1 and a ratio of the two mean values being compared.
  STATO:0000626	relative risk difference	A statistic that is a difference between 1 and a ratio of the two risk values being compared.	A statistic that is a difference between 1 and a ratio of the two risk values being compared.
  STATO:0000100	standardized mean difference	A statistic that is a difference between two means, divided by a statistical measure of dispersion.	A statistic that is a difference between two means, divided by a statistical measure of dispersion.	smd
  STATO:0000618	Cohen’s d statistic	A standardized mean difference which is calculated as a difference between two means, divided by a square root of an average of the variances of the two groups.	A standardized mean difference which is calculated as a difference between two means, divided by a square root of an average of the variances of the two groups.
  STATO:0000135	strictly standardized mean difference	A standardized mean difference which is calculated as a difference between two means, divided by the standard error of the difference between the two means.	A standardized mean difference which is calculated as a difference between two means, divided by the standard error of the difference between the two means.	ssmd
  STATO:0000319	Hedges’s g	A standardized mean difference which is calculated as a difference between two means, divided by the pooled standard deviation.	A standardized mean difference which is calculated as a difference between two means, divided by the pooled standard deviation.
  STATO:0000320	Glass’s delta	A standardized mean difference which is calculated as a difference between two means (of an experimental group and a control group), divided by the standard deviation of the control group.	A standardized mean difference which is calculated as a difference between two means (of an experimental group and a control group), divided by the standard deviation of the control group.
  STATO:0000635	number needed to treat	A statistic that represents the number of units that needs to be treated to prevent one additional undesired outcome. The Number Needed to Treat is calculated as the reciprocal of a treatment effect estimate, where the effect estimate is expressed as a risk difference.	A statistic that represents the number of units that needs to be treated to prevent one additional undesired outcome. The Number Needed to Treat is calculated as the reciprocal of a treatment effect estimate, where the effect estimate is expressed as a risk difference.	NNTB
  STATO:0000637	number needed to screen to detect	A statistic that represents the number of units that needs to be tested to identify one additional case. The Number Needed to Screen to Detect is calculated as the reciprocal of a difference in rate of detected cases with and without screening.	A statistic that represents the number of units that needs to be tested to identify one additional case. The Number Needed to Screen to Detect is calculated as the reciprocal of a difference in rate of detected cases with and without screening.	NNS
  STATO:0000636	number needed to screen to prevent	A statistic that represents the number of units that needs to be tested to prevent one additional adverse outcome, assuming that positive testing will lead to preventive intervention. The Number Needed to Screen to Prevent is calculated as the Number Needed to Treat divided by the prevalence.	A statistic that represents the number of units that needs to be tested to prevent one additional adverse outcome, assuming that positive testing will lead to preventive intervention. The Number Needed to Screen to Prevent is calculated as the Number Needed to Treat divided by the prevalence.	NNS
  STATO:0000638	number needed to harm	A statistic that represents the number of units that, if treated or exposed to the intervention, to lead to one additional undesired outcome. The Number Needed to Harm is calculated as the reciprocal of a treatment effect estimate, where the effect estimate is expressed as a risk difference.	A statistic that represents the number of units that, if treated or exposed to the intervention, to lead to one additional undesired outcome. The Number Needed to Harm is calculated as the reciprocal of a treatment effect estimate, where the effect estimate is expressed as a risk difference.	NNTH
  STATO:0000639	percentage	A ratio that is multiplied by 100, and has the same units of measurement in the numerator and the denominator.	A ratio that is multiplied by 100, and has the same units of measurement in the numerator and the denominator.
  STATO:0000705	measurement accuracy	A percentage in which the numerator represents the absolute value of one minus the difference between the true value and the observed value, and the denominator represents the true value.	A percentage in which the numerator represents the absolute value of one minus the difference between the true value and the observed value, and the denominator represents the true value.
  STATO:0000607	proportion	A ratio in which the numerator represents a part, fraction or share of the amount represented by the denominator.	A ratio in which the numerator represents a part, fraction or share of the amount represented by the denominator.
  STATO:0000413	incidence	A proportion in which the numerator represents new events.	A proportion in which the numerator represents new events.	incidence proportion
  STATO:0000412	prevalence	A proportion in which the numerator represents all events of interest (for example, both new and preexisting cases of a disease) in the population, which is represented by the denominator.	A proportion in which the numerator represents all events of interest (for example, both new and preexisting cases of a disease) in the population, which is represented by the denominator.	lifetime prevalence
  STATO:0000233	sensitivity	A proportion in which the numerator represents the detected items within the denominator that represents all items with the targeted attribute.	A proportion in which the numerator represents the detected items within the denominator that represents all items with the targeted attribute.	true positive rate
  STATO:0000134	specificity	A proportion in which the numerator represents the non-detected items within the denominator that represents all items without the targeted attribute.	A proportion in which the numerator represents the non-detected items within the denominator that represents all items without the targeted attribute.	true negative rate
  STATO:0000416	positive predictive value	A proportion in which the numerator represents the correctly detected items within the denominator that represents all items detected.	A proportion in which the numerator represents the correctly detected items within the denominator that represents all items detected.	PPV
  STATO:0000619	negative predictive value	A proportion in which the numerator represents the correctly non-detected items within the denominator that represents all items not detected.	A proportion in which the numerator represents the correctly non-detected items within the denominator that represents all items not detected.	NPV
  STATO:0000621	diagnostic yield	A proportion in which the numerator represents the correctly detected items within the denominator that represents all items tested.	A proportion in which the numerator represents the correctly detected items within the denominator that represents all items tested.
  STATO:0000620	risk	A proportion in which the numerator represents the cases in which an event or characteristic occurs and the denominator represents all possible cases.	A proportion in which the numerator represents the cases in which an event or characteristic occurs and the denominator represents all possible cases.	probability
  STATO:0000627	odds	A ratio in which the numerator represents the probability that an event will occur and the denominator represents the probability that an event will not occur.	A ratio in which the numerator represents the probability that an event will occur and the denominator represents the probability that an event will not occur.
  STATO:0000645	rate	A ratio in which the numerator represents any quantity and the denominator represents an interval of time.	A ratio in which the numerator represents any quantity and the denominator represents an interval of time.
  STATO:0000670	incidence rate	A rate in which the number of new events per total at risk is divided by an interval of time.	A rate in which the number of new events per total at risk is divided by an interval of time.	average hazard rate
  STATO:0000671	hazard rate	A conditional instantaneous rate in which the numerator represents an incidence conditioned on survival to a specified time, and the denominator represents a time interval with a duration approaching zero.	A conditional instantaneous rate in which the numerator represents an incidence conditioned on survival to a specified time, and the denominator represents a time interval with a duration approaching zero.	instantaneous hazard rate
  STATO:0000672	event rate	The number of occurrences per unit of time.	The number of occurrences per unit of time.
  STATO:0000673	event frequency rate	A ratio in which the numerator represents an event frequency and the denominator represents an interval of time.	A ratio in which the numerator represents an event frequency and the denominator represents an interval of time.
  STATO:0000674	event frequency	A ratio in which the numerator represents a count and the denominator represents a count (without involving an interval of time).	A ratio in which the numerator represents a count and the denominator represents a count (without involving an interval of time).	frequentist probability
  STATO:0000675	density	A ratio in which the numerator represents any quantity and the denominator represents an interval of space (distance, area, or volume).	A ratio in which the numerator represents any quantity and the denominator represents an interval of space (distance, area, or volume).
  STATO:0000676	number density	A ratio in which the numerator represents a count and the denominator represents an interval of space (distance, area, or volume).	A ratio in which the numerator represents a count and the denominator represents an interval of space (distance, area, or volume).
  STATO:0000704	concentration	A ratio in which the numerator is a measure of the solute and the denominator is a measure of the solvent.	A ratio in which the numerator is a measure of the solute and the denominator is a measure of the solvent.
  STATO:0000622	ratio-based measure of association	A measure of association expressed as a ratio.	A measure of association expressed as a ratio.
  STATO:0000677	hazard ratio	A measure of association that is the ratio of the hazard rate of an event in one group to the hazard rate of the same event in another group.	A measure of association that is the ratio of the hazard rate of an event in one group to the hazard rate of the same event in another group.
  STATO:0000680	incidence rate ratio	A measure of association that is the ratio of two incidence rates.	A measure of association that is the ratio of two incidence rates.	IRR
  STATO:0000681	standardized incidence ratio	An incidence rate ratio in which the numerator is the incidence rate in a group and the denominator is the incidence rate for a reference population.	An incidence rate ratio in which the numerator is the incidence rate in a group and the denominator is the incidence rate for a reference population.	SIR
  STATO:0000182	odds ratio	A measure of association that is the ratio of two odds.	A measure of association that is the ratio of two odds.
  STATO:0000678	prevalence ratio	A measure of association that is the ratio of two prevalences.	A measure of association that is the ratio of two prevalences.
  STATO:0000245	risk ratio	A measure of association that is the ratio of the risk of an event in one group to the risk of the same event in another group.	A measure of association that is the ratio of the risk of an event in one group to the risk of the same event in another group.	relative risk
  STATO:0000411	likelihood ratio positive	A measure of association that is the ratio of the probability of the test giving a positive result when testing an affected subject and the probability of the test giving a positive result when a subject is not affected.	A measure of association that is the ratio of the probability of the test giving a positive result when testing an affected subject and the probability of the test giving a positive result when a subject is not affected.	LR+
  STATO:0000410	likelihood ratio negative	A measure of association that is the ratio of the probability of the test giving a negative result when testing an affected subject and the probability of the test giving a negative result when a subject is not affected.	A measure of association that is the ratio of the probability of the test giving a negative result when testing an affected subject and the probability of the test giving a negative result when a subject is not affected.	-LR
  STATO:0000415	diagnostic accuracy	A measure of association that is the ratio of the number of correct results to the total number tested.	A measure of association that is the ratio of the number of correct results to the total number tested.	classification accuracy
  STATO:0000679	diagnostic odds ratio	A measure of association that is the ratio of the odds of a positive test in those with disease relative to the odds of a positive test in those without disease.	A measure of association that is the ratio of the odds of a positive test in those with disease relative to the odds of a positive test in those without disease.	DOR
  STATO:0000524	phi coefficient	A measure of association, ranging from -1 to 1, that measures the strength and direction of the linear relationship between two binary variables.	A measure of association, ranging from -1 to 1, that measures the strength and direction of the linear relationship between two binary variables.	Matthews correlation coefficient
  STATO:0000682	kappa	A measure of agreement among categorical assessments, corrected for chance agreement.	A measure of agreement among categorical assessments, corrected for chance agreement.	kappa statistic
  STATO:0000683	simple chance-corrected agreement coefficient	A Kappa statistic in which the expected agreement by chance is based on an assumption that all possible categories for assignment are equally likely.	A Kappa statistic in which the expected agreement by chance is based on an assumption that all possible categories for assignment are equally likely.	Brennan-Prediger agreement coefficient
  STATO:0000630	Cohen’s kappa	A Kappa statistic in which the expected agreement by chance is based on an assumption that the likelihood of each category for assignment is based on the proportion observed, and the number of raters is 2.	A Kappa statistic in which the expected agreement by chance is based on an assumption that the likelihood of each category for assignment is based on the proportion observed, and the number of raters is 2.
  STATO:0000631	modified Cohen’s kappa for more than 2 raters	A Kappa statistic in which the expected agreement by chance is based on an assumption that the likelihood of each category for assignment is based on the proportion observed, and the number of raters is more than 2.	A Kappa statistic in which the expected agreement by chance is based on an assumption that the likelihood of each category for assignment is based on the proportion observed, and the number of raters is more than 2.
  STATO:0000629	Scott’s pi	A Kappa statistic where the expected agreement between two raters is expressed in terms of the square of arithmetic means of marginal proportions of each assessment category.	A Kappa statistic where the expected agreement between two raters is expressed in terms of the square of arithmetic means of marginal proportions of each assessment category.
  STATO:0000632	misclassification rate	A ratio of the number of incorrect results to the total number tested.	A ratio of the number of incorrect results to the total number tested.	misclassification error
  STATO:0000628	F1-score	A ratio representing the harmonic mean of recall and precision.	A ratio representing the harmonic mean of recall and precision.	F1-measure
  STATO:0000301	covariance	A measure of correlation that is not normalized by the variances of the variables.	A measure of correlation that is not normalized by the variances of the variables.
  STATO:0000280	Pearson correlation coefficient	A measure of correlation, ranging from -1 to 1, that measures the strength and direction of the linear relationship between values of two continuous variables.	A measure of correlation, ranging from -1 to 1, that measures the strength and direction of the linear relationship between values of two continuous variables.	product moment correlation
  STATO:0000201	Spearman rank-order correlation coefficient	A measure of correlation, ranging from -1 to 1, that measures the strength and direction of the relationship between ranks by value of two ordinal or continuous variables, and is calculated as the Pearson correlation coefficient between the rank values.	A measure of correlation, ranging from -1 to 1, that measures the strength and direction of the relationship between ranks by value of two ordinal or continuous variables, and is calculated as the Pearson correlation coefficient between the rank values.	Spearman's rho
  STATO:0000240	Kendall correlation coefficient	A measure of correlation, ranging from -1 to 1, that measures the strength and direction of the relationship between ranks by value of two ordinal or continuous variables, and is calculated based on the difference in the number of concordant and discordant pairs of rankings divided by the number of all possible pairs of rankings.	A measure of correlation, ranging from -1 to 1, that measures the strength and direction of the relationship between ranks by value of two ordinal or continuous variables, and is calculated based on the difference in the number of concordant and discordant pairs of rankings divided by the number of all possible pairs of rankings.	Kendall's tau-b
  STATO:0000612	Goodman and Kruskal’s gamma	A measure of correlation, ranging from -1 to 1, that measures the strength and direction of the relationship between ranks by value of two ordinal or continuous variables, and is calculated based on the difference in the number of concordant and discordant pairs of rankings divided by the total number of pairs of rankings, where ties are not counted among the pairs of rankings.	A measure of correlation, ranging from -1 to 1, that measures the strength and direction of the relationship between ranks by value of two ordinal or continuous variables, and is calculated based on the difference in the number of concordant and discordant pairs of rankings divided by the total number of pairs of rankings, where ties are not counted among the pairs of rankings.	gamma coefficient
  STATO:0000565	regression coefficient	A measure of association that is used as the coefficient of an independent variable in a regression model, of the dependent variable, which is linear in its parameters.	A measure of association that is used as the coefficient of an independent variable in a regression model, of the dependent variable, which is linear in its parameters.
  STATO:0000686	mean calibration	A measure of calibration that is the average of a function of the difference between the expected values and the observed values.	A measure of calibration that is the average of a function of the difference between the expected values and the observed values.
  STATO:0000688	calibration intercept	A measure of calibration that is the difference between the mean expected value and the mean observed value.	A measure of calibration that is the difference between the mean expected value and the mean observed value.	calibration-in-the-large
  STATO:0000687	calibration slope	A measure of calibration that is the rate of change in the appropriately transformed value per unit change of the correspondingly transformed predicted value.	A measure of calibration that is the rate of change in the appropriately transformed value per unit change of the correspondingly transformed predicted value.	calibration-in-the-small

Expansion performed internally based on codesystem Scientific Evidence Code System (SEVCO) -- Release 2.0 v2.0 (CodeSystem)

This value set contains 89 concepts

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