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  1. R

    Measuring association between an ordinal variable and presence or absence of an event

    Hi everyone, I have done a research project measuring the severity of tortuosity of iliac arteries in patients who underwent EVAR (Endo Vascular Aneurysm Repair), graded it into None, mild , moderate and severe. i am trying to assess the association between severity of tortuosity and adverse...
  2. R

    New to stats forum,

    Hi every one, i have just started on my first research project, trying to understand which is the best test to use to analyse my results.