Performed Activity Study Day Range

The relative timing for a performed activity expressed as the number of days offset from the study-defined reference activity (e.g. date of registration, start of treatment) for this particular subject. EXAMPLE(S): Day 1, Days 10-20; OTHER NAME(S): Study Day; NOTE(S): Derived from the dateRange of this activity minus the dateRange of the reference activity + 1. The study-defined reference activity can be different from study to study. The study day for a date after this reference activity is a positive integer calculated as the difference in the two dates + 1. The study day for dates before the reference activity is a negative integer calculated as the difference between the two dates. Note that this means there is no "Day 0." (NCI Thesaurus/BRIDG)

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Performed Activity Status Date

The date (and time) on which the status is assigned to the activity.

Performed Activity Status Code

A coded value specifying the phase in the lifecycle of a performed activity.

Performed Activity Repetition Number

An integer that identifies the particular occurrence of a repeating activity. The first repetition is defined as '1'.

Performed Activity Missed Reason

The text and/or code that describes the rationale behind why an activity is not done.

Performed Activity Missed Indicator

Specifies whether an activity did not occur.

Performed Activity Delay Duration

The period of time that an action is delayed relative to an original schedule.