PROC LOGISTIC BY and STRATA statements

[Chengyiw]

Hi, I'm doing logisitic regression analyses for men and women separately to see how gender makes a difference. I think BY and STRATA statements both can make it work. However, I am curious what the difference would be using these two statements?

[PeterClemmensen · Accepted solution]

In this case, as in any analysis situation, if you want to do separate analysis based on the distinct values of a categorical variable (in this case gender), use the BY statement.

[Chengyiw]

It took me hours to run PROC LOGISTIC with STRATA statement. I thought it would have also given me the results for each gender group. But it did not. You're right. Thanks!

[PeterClemmensen]

Anytime, glad to help 🙂