I have a data set of about 30K individuals who responded to twenty yes/no questions (coded 1/0) about their mental health. I also have age, gender, and ethnicity (all dummy coded) information. The dependent is a bad outcome within six months of filling out the questionnaire.
I am using SPSS 28 on a Mac and want to know how to add groups of variables rather than all at once, which seems to be the default option with the PLUM command in SPSS 28. I want to add the demographics first then a set of 13 responses.
Any help would be appreciated.
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Robert Canning, PhD
Davis, CA
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