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5.7 Logistic Regression: Interpreting Model Coefficients 

MarinStatsLectures-R Programming & Statistics
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In this video I explain what the interpretation of the model coefficients are in a logistic regression model. I separate what the interpretation would be if the X variable is numeric/continuous, quantitative vs when the X variable is categorical/factor/qualitative.
I also talk about the interpretation of the exponentiated coefficients as odds ratios.
All of these interpretation are made generically, and in videos that follow, we look at the interpretations using numeric examples.
These videos support a course I teach at The University of British Columbia (SPPH 500), which covers the use of regression models in Health Research. These videos were put together to use for remote teaching in response to COVID.
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11 янв 2021

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Комментарии : 13   
@pedrocolangelo5844
@pedrocolangelo5844 2 года назад
Thank you so much for these lectures! You are an amazing professor.
@medwithmaram
@medwithmaram 8 месяцев назад
God bless you! This has been giving me a headache and now its so much clearer
@Dearest_daisy
@Dearest_daisy Год назад
Wonderful and clear explanations! Thank you so much!
@al16899
@al16899 Год назад
So helpful! Thank you for making this video! 😃
@divutiful
@divutiful 2 года назад
Thanks, this was really helpful!
@drachenschlachter6946
@drachenschlachter6946 Год назад
So good explained!!!! Greetings from Germany!
@huzaifaimam7252
@huzaifaimam7252 2 года назад
This is so helpful!
@MusafirHoonYaro
@MusafirHoonYaro Год назад
Thank you very much for such a lucid explanation. If you have a playlist of videos on Logistical Modeling that cover determination of Confidence Intervals of the coefficients (Betas), could you kindly point me in the right direction? The textbook I am following skimps on these details. Thank you very much for your help.
@adenrajput8531
@adenrajput8531 3 года назад
Thank you, Sir. It was so helpful. Could you please provide references for citation purposes?
@phdpirate4917
@phdpirate4917 3 года назад
Thanks for the video. You really cleared things up for me. But now I'm wondering, what does it mean when the logistic regression coefficients are high like 7, 18 or 34?
@JoaoVitorBRgomes
@JoaoVitorBRgomes 3 года назад
it depends. If it is a cat variable, suppose sex, reference as male (0). If you have 7*sex, then being a woman makes 7 times more likely/ 700% change in the log odds relative to being a man.
@wasfiahoque4637
@wasfiahoque4637 Год назад
What if x is numerical and has multiple continuous variables (A, B, C, D) NOT categorical ? Would A still be held as the reference? Is it always the first variable that is held as a reference for the continuous values in the x axis?
@marinstatlectures
@marinstatlectures Год назад
For continuous variables the reference (part of the intercept) is for X=0, and for categorical variables/factors one of the categories/levels is the reference, and in software the default is the category that comes first alphabetically or numerically
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