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Dummy Variables vs Factor Usage in R for building Cox Regression
I'm aware that factors are the proper way to handle categorical variables but the explanation gets a little confusing when we start having factors with multiple levels.
For example, let's say I have a ...
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Differences between Wald Statistics and P-values obtained with Dummy Coding vs. Direct Coding in Cox Models
Using the larynx dataset (source: Survival Analysis Techniques for Censored and Truncated Data) to illustrate, supposing you want to estimates the hazard rates of event for stages 2 and stages 3 ...
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