Recent content by Dr Peter

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    Biostatistics for pain study, NP t-test or GLM ?

    Yes only those two measurements, it's a long term follow up study. Within the questionnaire there are questions regarding: spine surgery, other treatments etc over the 10 year period. No difference in number of spine surgeries, other treatments, BMI, alcohol consumption, smoking etc exist...
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    Biostatistics for pain study, NP t-test or GLM ?

    This might be a very basic question, but I keep getting different answers, so I'll ask it in this forum of experts :) Material: Back pain prospective cohort study of n=200 patients all suffering from LBP at the initial consultation. A questionnaire is filled at time=0 years and time=10 years...