[R] Difference in offset values in R and STATA

Tue Apr 14 21:37:29 CEST 2020

Also, is the default base for "log" the same in both programs?

On Tue, Apr 14, 2020 at 3:36 PM Sorkin, John <jsorkin using som.umaryland.edu> wrote:
>
> Your question is unlikely to be answered unless you post code demonstrating the problem
> J
>
> John David Sorkin M.D., Ph.D.
> Professor of Medicine
> Chief, Biostatistics and Informatics
> University of Maryland School of Medicine Division of Gerontology and Geriatric Medicine
> Baltimore VA Medical Center
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> On Apr 14, 2020, at 3:23 PM, Haddison Mureithi <mureithihaddison using gmail.com> wrote:
>
> Hae guys,
> When performing a poisson regression sometimes one has to input the
> offset/exposure variable to account for individual time spent in a certain
> therapy before acquiring a certain condition of interest, whereby in r
> offset(log(months)) and in STATA offset(log(months)) results differ.
> Thereby increasing the difference of the overall outcome, i don't know why
> any one know why?
>
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