Hi Everyone!

I am facing an issue in conducting repeated measures and post-hoc tests for my data in SPSS V28.

In V27, I could select repeated measures, fill in the right columns and select Bonferroni Post-Hoc analysis and things would work.

Running the same test with V28 and I get " Post hoc tests are not performed for Time because error term has zero degrees of freedom." with most columns of repeated measures results are empty and no post-hoc results.

I looked into this post from IBM to modify the model attributes that corresponds to the above error, but it did not work:  https://www.ibm.com/support/pages/anova-1-subj-cell-no-posthocsanova with 1 subj per cell, no posthocs

My data 12 rows x 4 columns (1 column is userID and 3 columns have measurement data).

I previously ran repeated measures with bonferroni correction on the data without any issues in V26-V27.

I am not an expert in statistics. Appreciating your help guys!

With Best Regards,


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