7.6 Logistic Regression: Checking Linearity

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This video discusses, in concept, how to check linearity for a logistic regression model. The video that follows in this series shows how to implement this in R.

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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Content Creator: Mike Marin (B.Sc., MSc.) Senior Instructor at UBC.
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These videos are created by #marinstatslectures to support some statistics courses at the University of British Columbia (UBC) (#IntroductoryStatistics and #RVideoTutorials ), although we make all videos available to the everyone everywhere for free.

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Thank you Dr. This has been the best video I watch on this topic. Explanation is beyond amazing. Appreciate very much. Blessings.

humoaz

thank you so so much for this. it now makes sense how to do that. i could not find any other explanation, and I looked everywhere

GQElvie

very good explanation, the best I have seen.

alexandre

Thanks so much - this video was very helpful.

RC-svfm

Hi Professor Marin. I notice you only describe this process for numeric predictors. Does linearity still need to be tested for categorical predictors (with more than 2 categories)?

meesemisosoup

why do you group them? I have always computed the log odds for each Single observation and plotted the thing. of course the linearity is difficult to observe because of the level of noise when we use directly the data compared to your aggregate example.
could you provide a reference or publication for this method. I never saw it.

yasserbouklouch

Can I use multiple logistic regression when my covariates are a mix of continuous numeric variables and dummy variables?

What happens with the linearity assumption when it comes to dummy variables (X=1 or X=2)

angelicagratuito

ı get S-shape when ı calculate for each continious independent variable. is it satisfy for linearity?

mehmetarabac

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