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  1. K

    Friedman's interpretation

    Hi all, I'm having some real difficulty interpreting the output of a Friedman's ANOVA. I wonder if anybody can help? Essentially I have a group of 21 people who received an intervention for tremor. A measure of their tremor severity was performed at baseline (t0), during the intervention (t1)...
  2. K

    Sum of questionnaire score - ordinal vs interval? and choosing an inference test

    Thanks. That's what I suspected. The difficulty is then which non-parametric statistical test to do for ordinal data. I had thought an ANCOVA was best with group (intervention vs control) as independent variable, final disability questionnaire score as dependent variable and baseline disability...
  3. K

    Sum of questionnaire score - ordinal vs interval? and choosing an inference test

    Hello there, I'm doing a module in research methods and we are required to analyse some data (provided to us) from a randomised control trial. I'm having some difficulty deciding on what stats analysis to do... Background: the primary outcome measure is the sum of scores from a 36 item...