Overview

System variables in Studytrax Quick Filters represent data points that can be referenced in filter expressions. Variables are referenced using the # prefix followed by the variable code (e.g., #FirstName, #SiteCode).

Site

Variable Code Description Data Type Example
SiteCode The code assigned to the site Text #SiteCode = "001"
SiteName The name of the site Text #SiteName ~= "Boston*"

Subject

Variable Code Description Data Type Example
FirstName Subject’s first name Text #FirstName = "John"
LastName Subject’s last name Text #LastName ~= "Smith*"
ReferenceID External reference identifier for the subject Text #ReferenceID = "REF001"
EnrollmentDate Date when subject was enrolled in the study Date #EnrollmentDate > DATE(2024, 1, 1)
ScreeningDate Date when subject was screened Date #ScreeningDate != NULL

Project (ProjectSubject)

Variable Code Description Data Type Example
ProjectCode The code assigned to the project Text ProjectCode = "STUDY001"

Encounter/Interval

Variable Code Description Data Type Example
EncounterIndex Index of the encounter within a repeating interval Numeric #EncounterIndex >= 1
DataCompletionStatusId Completion status of the encounter data Numeric #DataCompletionStatusId = 1

See Also


Data Completion Statuses