I am looking for an approach to evalute the effectiveness of a rehabilitation program on back pain. Group allocation and time (two measurement points) serve as independent variables, while I also want to evaluate the specific treatment effect of a stress reduction program by including stress as additional dependent variable.

I hope this became clear and someone could help me in that matter. I already used regular MANOVA using the differences between the measurement points in back pain and stress as dependent variables, but I was hoping for another approach to analyze the data.

Kind regards,

Jahan

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