A friend of mine is writing her master's thesis in physical therapy and has a question about the repeated measures MANOVA model. I am asking this question here for her and hope someone can help her because she is not getting any support from her supervisor and does not have a strong background in statistics.
Her study design is the following:
- 2 groups (intervention and control group)
- 3 measurement time points (baseline, after 4 and 8 weeks)
- dependent variable: pain (pain score) and pain impairment in everyday life (score)
- independent variable: training weeks (time) Statistical model: MANOVA with repeated measures in SPSS.
Her Questions are:
What conditions need to be checked for a MANOVA with repeated measures?
SPSS result output: How do I have to interpret the table "Multivariate Tests" and "Multivariate" and what are the further steps?
How do I have to test multiple, because post-hoc tests are only possible with more than three groups (bonferroni correction necessary)?
If you know scientific sources that deal with such a study design, that would also be a great help already. Many thanks in advance!