I conducted a a quasi-experimental study to compare the efficacy of two programs in four time-points (pre-test, post-test and one-year and two-year follow-ups) among couples (Distinguishable Dyads). I want to use multilevel modeling to assess whether there is a difference between marital satisfaction scores of couples assigned to intervention groups and couples assigned to a control group and whether there is a difference between marital satisfaction scores of couples assigned to the intervention group A and couples assigned to the intervention group B. I am going to run the analysis by using SPSS.
How can I compare the 3 groups?
It sounds like couples is your unit of analysis. And what is your third group?
Thank you for your consideration.
The third group is a control group.
Is couples your unit of analyses? If so, I am trying to figure out where the multilevel aspect is. Can you write your model as an equation for readers?
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