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My sample size is small (n= 28). I have 2 cohorts who have carried out the same interventions at different times. I have collected pre and post intervention scales for both groups. What I have not done is pair the data, as it was anonymous. This is part of a bigger qualitative study. Any suggestions which test I should use to see if there are any differences in the scale scores pre and post?

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  • $\begingroup$ The point here is that the data actually are paired, you just don't know the pairing, is that right? $\endgroup$ – gung - Reinstate Monica Jun 8 '16 at 20:47
  • $\begingroup$ Yes that is correct, it is from the same group pre and post $\endgroup$ – publich Jun 10 '16 at 16:58

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