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  1. H

    What type of analysis? Ordinal Exposure, Dichotomous Outcome

    I have ordered exposure: 4 levels of contamination I have dichotomous outcome: health outcome Yes/No My understanding is that because it is a dichotomous outcome, I should use logistic regression. Should I be using logistic regression like I would if the exposure was continuous? If not, what...
  2. H

    Comparing Medians

    I am comparing water quality levels (continuous variable) in rural areas vs urban areas. The distribution of water quality is not normally distributed. I have 100 samples from the urban areas and 200 samples from the rural areas. From what I have found so far, I can't seem to find a test...