Represents a period of time with respect to a notional point in time, which is not specified. A sign may be used to indicate the duration is backwards in time rather than forwards.

NOTE: two deviations from ISO 8601 are supported, the first, to allow a negative sign, and the second allowing the 'W' designator to be mixed with other designators. See time types section in the Foundation Types model.

Used for recording the duration of something in the real world, particularly when there is a need a) to represent the duration in customary format, i.e. days, hours, minutes etc, and b) if it will be used in computational operations with date/time quantities, i.e. additions, subtractions etc.

Misuse: Durations cannot be used to represent points in time, or intervals of time.

Carriage return character.

Line feed character.

Predefined terminology identifier to indicate it is local to the knowledge resource in which it occurs, e.g. an archetype

Optional normal status indicator of value with respect to normal range for this value. Often included by lab, even if the normal range itself is not included. Coded by ordinals in series HHH, HH, H, (nothing), L, LL, LLL; see openEHR terminology group normal_status.

Optional normal range.

Optional tagged other reference ranges for this value in its particular measurement context.

Optional status of magnitude with values:

• "=" : magnitude is a point value
• "<" : value is < magnitude
• ">" : value is > magnitude
• "<=" : value is <= magnitude
• ">=" : value is >= magnitude
• "~" : value is approximately magnitude

If not present, assumed meaning is "=" .

Accuracy of measurement, expressed either as a half-range percent value (_accuracy_is_percent_ = True) or a half-range quantity. A value of 0 means that accuracy is 100%, i.e. no error.

A value of _unknown_accuracy_value_ means that accuracy was not recorded.

If True, indicates that when this object was created, _accuracy_ was recorded as a percent value; if False, as an absolute quantity value.

ISO8601 duration string, including described deviations to support negative values and weeks.

Represents a period of time with respect to a notional point in time, which is not specified. A sign may be used to indicate the duration is backwards in time rather than forwards.

NOTE: two deviations from ISO 8601 are supported, the first, to allow a negative sign, and the second allowing the 'W' designator to be mixed with other designators. See time types section in the Foundation Types model.

Used for recording the duration of something in the real world, particularly when there is a need a) to represent the duration in customary format, i.e. days, hours, minutes etc, and b) if it will be used in computational operations with date/time quantities, i.e. additions, subtractions etc.

Misuse: Durations cannot be used to represent points in time, or intervals of time.

ISO8601 duration string, including described deviations to support negative values and weeks.

Represents a period of time with respect to a notional point in time, which is not specified. A sign may be used to indicate the duration is backwards in time rather than forwards.

NOTE: two deviations from ISO 8601 are supported, the first, to allow a negative sign, and the second allowing the 'W' designator to be mixed with other designators. See time types section in the Foundation Types model.

Used for recording the duration of something in the real world, particularly when there is a need a) to represent the duration in customary format, i.e. days, hours, minutes etc, and b) if it will be used in computational operations with date/time quantities, i.e. additions, subtractions etc.

Misuse: Durations cannot be used to represent points in time, or intervals of time.

Carriage return character.

Line feed character.

Predefined terminology identifier to indicate it is local to the knowledge resource in which it occurs, e.g. an archetype

Optional normal status indicator of value with respect to normal range for this value. Often included by lab, even if the normal range itself is not included. Coded by ordinals in series HHH, HH, H, (nothing), L, LL, LLL; see openEHR terminology group normal_status.

Optional normal range.

Optional tagged other reference ranges for this value in its particular measurement context.

Optional status of magnitude with values:

• "=" : magnitude is a point value
• "<" : value is < magnitude
• ">" : value is > magnitude
• "<=" : value is <= magnitude
• ">=" : value is >= magnitude
• "~" : value is approximately magnitude

If not present, assumed meaning is "=" .

Accuracy of measurement, expressed either as a half-range percent value (_accuracy_is_percent_ = True) or a half-range quantity. A value of 0 means that accuracy is 100%, i.e. no error.

A value of _unknown_accuracy_value_ means that accuracy was not recorded.

If True, indicates that when this object was created, _accuracy_ was recorded as a percent value; if False, as an absolute quantity value.

ISO8601 duration string, including described deviations to support negative values and weeks.