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Thread: Linear regression and dichotomous variable

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    Linear regression and dichotomous variable




    Hello

    I would like to do a linear regression (stepwise), and one of the variables I want to enter is sick/ not sick. The other variables are from ratio scale. Is this is possible?

    In addition, in my experiment N=60, how many potential predictors I can enter to the model?

    Thank you
    Tal

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    Re: Linear regression and dichotomous variable


    I would like to do a linear regression (stepwise),
    This could cause problems.
    http://www.stata.com/support/faqs/st...sion-problems/
    http://andrewgelman.com/2014/06/02/h...se-regression/

    and one of the variables I want to enter is sick/ not sick. The other variables are from ratio scale. Is this is possible?
    http://www.psychstat.missouristate.e...ok/mlt08m.html
    http://bfy.tw/3OuC

    In addition, in my experiment N=60, how many potential predictors I can enter to the model?
    It depends, amongst other things, on the magnitude of effects assumed.
    You could perform a power analysis using G*power http://www.gpower.hhu.de/
    I suppose that 3-5 predictor could be typically used.

    With kind regards

    K.

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