How can R be used to calculate the prevalence ratios using Cox regression + robust variance estimates ?
Well,
In Design package have a command: cph This command have a option "robsut" with default=FALSE, but in help is write: " ... robust if TRUE a robust variance estimate is returned. ..."
I think that is your response...
bye
Bernardo Rangel Tura, MD, MSc
National Institute of Cardiology Laranjeiras
Rio de Janeiro Brazil
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