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st: Adjusted Attributable Risk


From   "rmarfisi@tiscali.it" <rmarfisi@tiscali.it>
To   statalist@hsphsun2.harvard.edu
Subject   st: Adjusted Attributable Risk
Date   Fri, 24 Sep 2010 15:47:04 +0200 (CEST)

Dear Statalist,

I used the Stata 7 to calulate the adjusted attributable risk 
for two 
dichotomous variables (0,1) with the following commands:

logistic Y X 
J

the odds ratio are 1.164161 for X and 1.446024 for J.

aflogit X J

the AF 
are 0.0836 for X, 0.1118 for J and 0.1892 as TOTAL.

I need to know how the 
stata obtain 0.0836, 0.1118 and 0.1892.
These are the data that I used:


                   Var Y
Var X           1        0
  1           1591    3868

  0            378     1138 

                   Var Y
Var J           1        
0
  1            955    1954
  0          1014     3052

Thanks in advance for 
your help!

        RosaMaria


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