I am hoping that I can get some syntax help on spss. I ran a study comparing the effectiveness of an intervention with a waitlist control on a variety of measures. Dependent variables were measured at preintervention, post, and follow up. Hence, there are two conditions. For the intervention condition, there are 4 groups (all independently received the intervention, each group has 10-12 participants). For the waitlist control, there are 2 groups (12-13 participants per group). since there is a nested factor here, I'm not sure how to proceed with modifying the syntax. any help would greatly be appreciated! Some have suggested using multilevel modeling but I don't have the knowledge or the time to learn it.
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