Preferred Label : Study Day Range;
NCIt related terms : studyDayRange;
NCIt definition : The relative timing for a planned or 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 experimental unit. EXAMPLE(S): Day 1, Days
10-20 OTHER NAME(S): Study Day NOTE(S): 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.;
Origin ID : C95349;
UMLS CUI : C2987072;
Semantic type(s)
- concept_is_in_subset
