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  • Is it right to use kwallis here?

    Dear community,

    I have a big dataset from the same population. This population is divided in four exclusive groups A, B, C and D. The amount of people in each group is somewhat balanced. All observations have an ordinal categorical variable W very right-skewed that has 4 categories 1, 2, 3 and 4. The histograms for each group seem practically the same.
    I wanted to test whether the distribution into the categories 1-4 for the variable W is different according to the groups A-D. It is not clear to me if kwallis is right to my case. What are your opinions on this subject?

  • #2
    I think you can use kwallis or ologit, the difference between the commands are probably small. If they agree with your graphical assessment you have solid evidence.
    Best wishes

    Stata 18.0 MP | ORCID | Google Scholar

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    • #3
      Tallys:
      welcome to this forum.
      As an aside to Felix's helpful reply, you do not tell is if you are dealing with a regression (where the dependent variable is a multinomial ordered one) or else.
      Kind regards,
      Carlo
      (Stata 19.0)

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      • #4
        Thank you Carlo for the kind answer. It was just a statistical test for distribution; I was not meant to regress anything in this context. Thanks again

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