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st: Gamma functions in R and Stata's Gamma Functions


From   tiago.pereira@incor.usp.br
To   statalist@hsphsun2.harvard.edu
Subject   st: Gamma functions in R and Stata's Gamma Functions
Date   Fri, 7 Mar 2008 13:49:32 -0300 (BRT)

Dear All,

I am trying to implement a test that requires the incomplete gamma function.

The R code is given by

example<- pgamma(Z, shape=X,rate=Y)

where Z is the critical value for a chi^2 distribution. I am not very
experienced with this distribution, and failed to find out the
corresponding counterpart in Stata. Hence, would it be possivle to you to
provide me some tips to implement it in Stata?

Thanks in advance for your time.

Tiago



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