longitudinal analsis of dichotomous variable in SPSS


New Member
Hi all. I'm stumped. I have a dichotomous (yes/no) variable that I have assessed at 4 different time points. I would like to analyze this variable to see if/how it changes over time, but honestly don't know how. I can run a bunch of chi-squares, but i'm pretty sure that doesn't really address the repeated measures. Any insights would be very welcome.


TS Contributor
If you have measured one and the same samples 4 times, then
Cochran's Q. For post-hoc comparisons between 2 time points,
McNemar's test.

With kind regard