Commands

[Luis Mijares]

Hello, I am trying to analyse an RCT experiment and I want too see the difference in means between categorical variables before and after the treatment affect was applied, I try doing ttest but I can't seem to get the difference in means.

[Carlo Lazzaro]

Luis:
please, see the FAQ on how to post more effectively (-dataex- included): I'm totally unclear with what you're after. Thanks.
That said, I find difficult to justify -ttest- as supporting any inferential analysis with categorical variables.