Hi all, hoping this has an easy answer. I have different models which have different variables in them. I want to only use the respondents who answered all of the questions I am using. For example, Model 1 has a, b & c, and model 2 has a, b, c, d, e & f. How do I get model 1 to only use respondents who answered A through F?

I have tried googling this and searching on this forum, but I must not be using the correct keywords. Thanks in advance!