Difference in offset values in R and STATA
Also, is the default base for "log" the same in both programs?
On Tue, Apr 14, 2020 at 3:36 PM Sorkin, John <jsorkin at 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 10 North Greene Street<x-apple-data-detectors://12> GRECC<x-apple-data-detectors://12> (BT/18/GR) Baltimore, MD 21201-1524<x-apple-data-detectors://13/0> (Phone) 410-605-711<tel:410-605-7119>9 (Fax) 410-605-7913<tel:410-605-7913> (Please call phone number above prior to faxing) On Apr 14, 2020, at 3:23 PM, Haddison Mureithi <mureithihaddison at 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? [[alternative HTML version deleted]]
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