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Thread: Multivariate logistic regression - weighted or unweighted data

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    Multivariate logistic regression - weighted or unweighted data




    Hello everyone,
    I want to calculate a multivariate logistic regression. All the independent variables are also dummy-coded. There is also a weighting variable in the data.
    Should the weighting be turned off for the regression?
    Thx a lot
    Olly

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    Re: Multivariate logistic regression - weighted or unweighted data

    If your data comes with weights this may be due to how the data was generated. Hence the weights could be there to take into account that the sampling techniques used are not those of a simple random sample. Not using the weights could in the case be horribly wrong.

    If you are using the data merely to play around and learn statistics this is one thing but if you are doing something serious with the data you probably ought to figure out what the weights are there for. Obviously you are in a better position than us since you know the origin of the data.


    And offcourse you can also do both and compare to see if it makes any difference in your case.

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    Re: Multivariate logistic regression - weighted or unweighted data


    The weights are used to achieve a representative sample distribution regarding age, gender and region.
    However, I wasn't sure whether it is right to apply weights to a logistical regression in general.

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