Overview
A screening interval is used to determine a subject's screening status (In-screening, failed screening, passed screeing, enrolled). Screening must be an enabled feature in the project to create screening intervals.
Required Role(s)
- Project Management
Steps
Attributes tab
- Enter a name for the interval
- The Active box is checked by default indicating the interval is active
- The Fixed Interval box must be checked for a screening interval
- Enter the Target Length which must be set to a negative value (to indicate that screening occurs prior to baseline)
- Select the units for the target length from the drop down box
- Enter the Before Target Range and After Target Range
The Before and After Target Range values determine the Earliest and Latest projected dates for data entry
- Select the units from the drop down box for the before and after target range
- Optionally enter instructions for the subject that will display when they enter this encounter
This section only displays in projects with the Subject Login feature enabled
Variable Groups tab
- Mark the checkbox in the Include column for the variable groups that will be collected at this interval
- Mark the checkbox in the Entered By Subject column for variable groups that will be entered by the subject
This column is only displayed in projects with Subject Login enabled
Interval Expression tab
- Enter a dependency that is specific to this interval
- Enter a dependency that goes across variable groups
Dependencies that are specific to a variable group are entered on the Dependencies tab of the Variable Group Update page
Screening Expression tab
Enter the function to set the subject's screening status and return one of the enrollment status values.
Enrollment Status Values
1 - In Screening
2 - Failed Screening
3 - Passed Screening
4 - Enrolled
Returning no value or any other value will results in an Unknown enrollment status.
Example of a screening expression's User Defined Function:
