Hello! I'm trying to find out what the effect of cognitive therapy is on panic attacks. The participants filled in how many panic attacks they have got during the 12 weeks. I have data of pre-test and week 1, week 2 ..... week 11. If I want to know if the therapy has an effect on how many panic attacks they get, what kind of SPSS test should I use? I have to report the test results and interpret the direction of the significant effects!