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st: calculating PAR when there are >2 categories within a variable


From   "Benjamin, Laura" <[email protected]>
To   "'[email protected]'" <[email protected]>
Subject   st: calculating PAR when there are >2 categories within a variable
Date   Mon, 8 Apr 2013 20:29:30 +0000

Hi there,

I am working with STATA 11 and calculating the population attributable risk (PAR) for several risk factors of stroke; this is based on a case-control design. I have been using the punaf function for this.

I am uncertain about how to determine the PAR when there are >2 categories within a variable.

For example, the variable "woodexp" has four categories (one of these being the reference). Is it possible to calculate the PAR for each of the categories? I would appreciate any advice on this.

 

Many thanks,

Laura





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