I am studying the effect of a diabetic support group on diabetes distress and a1c. The study will be a descriptive pre and post test design. Since my independent variable is nominal and my dependent variables are interval, can I use a Pearson coefficient to measure correlation. Or, would I just use a univariant analysis of diabetes distress and one on a1c?
Hi,
Wilcoxon Signed Rank test would be appropriate for your case
Good luck
I think you should use independent samples t-test. This t-test is used when you want to compare the means of a normally distributed interval dependent variable for two independent groups.
If you assume that the dependent variable is a normally distributed interval variable (you only assume that the variable is at least ordinal), then you should use the Wilcoxon-Mann-Whitney test, which is a non-parametric analog to the independent samples t-test.
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