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  1. M

    We have found statistical differences with t-tests, but there must be more!

    Hello TS users, The attached data set refers to patients that had an operation, a vast number of measurements were taken before and after. We have found some evidence of improvement in questionaires for pain scale (VAS), ability of living (RMS & ODS) and walking distance, all tested using...
  2. M

    Clinical trial analysis - have I got it right?

    Two-way ANOVA (with replication), how robust is robust? Hello all, I would like to see what the pain of a patient is before and after an opperation. But my data is not fitting the assumptions of ANOVA. I have read that ANOVA is robust, but how robust? I have data from patients who were...