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st: Stata vs SAS Survey Risk Ratios

From   "Joshua Josephs" <>
Subject   st: Stata vs SAS Survey Risk Ratios
Date   Thu, 04 Apr 2013 10:48:32 -0400

Dear StataListers, 
Im  trying to find out exactly what Stata does compared to SAS in calculating risk ratios from survey data. In SAS you calculate a survey logistic regression and then use average predicted margins to get the risk ratios. In Stata you use the svy glm command which uses maximum likelihood. Im trying to find out if Statas method provides the appropriate estimates and confidence intervals. 

Any help is appreciated, 

Joshua Josephs

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