Appendixes | Report Option Descriptions | Stratification Variables

Stratification Variables
Select one or more variables from the ADSL table by which to stratify the Cochran-Mantel-Haenszel exact test. Using such variables to stratify the analyses can help avoid confounding in the tests of interest.
Refer to PROC FREQ documentation for additional details.
To Specify Stratification Variables:
Select Specified Below as Trial Time Windows.
Click to open the Add window (shown below) that lists each variable contained in ADSL or the domain and SUPPxx (if merged) specific to this report.
In this example, SEX was selected and added.