topic Re: Population Attributable Fraction using Odds in SAS Programming

Population Attributable Fraction using Odds

esass — Thu, 15 Dec 2022 20:54:40 GMT

Is there a way to calculate PAFs using odds in SAS? I've been using PROC STDRATE but it only allows rates/risks.

Re: Population Attributable Fraction using Odds

ballardw — Thu, 15 Dec 2022 23:25:08 GMT

By "using Odds" do you mean "odds ratio"? or something else?

You may have to describe the actual problem and data in more detail to get a definitive answer for your need.

Re: Population Attributable Fraction using Odds

esass — Fri, 16 Dec 2022 02:24:20 GMT

Yes! An odds ratio from a 2x2 using case-control data. Not tied to STDRATE - just looking for a way to get the PAF and corresponding 95% confidence interval. STDRATE only calculates risks/rates. Example below:

Event_E = # exposed cases, Count_E = total # exposed, Event_NE = # unexposed cases, Count_NE = total # unexposed

data example ;

input Event_E Count_E Event_NE Count_NE;

datalines;

20 200 59 1065

;

proc stdrate data=example

refdata=example

method=indirect(af)

stat=risk;

population event=Event_E total=Count_E;

reference event=Event_NE total=Count_NE;

run;