adjusted prevalence ratios or relative risk

Xiaoyi — Wed, 29 Nov 2017 16:58:45 GMT

Has anyone had experience calculating adjusted prevalence ratios (PR) and output the results including 95% CI?

Prevalence ratio is basically the ratio of two proportions. It is DIFFERENT from Odds Ratio, and it is commonly used in epidemiological studies. Different models/methods can be used for the calculation. My understanding is PR is similar to relative risk ratio, could the precedure used to calculate risk ratio used for PR?

I intend to create a model similar to the following. I would really appreciate if you can recommend methods and SAS codes for the calculation and output PR and 95%CI. (most factors are rare conditions)

model factor1 (event=1) = Race Adt1 Adt2

class Race

(Adt1, Adt2 are conditions to be adjusted, prevalence/proportion of factor1 are compared between Race: 2, 3 vs 1)

sample data: (or I can provide real data if you prefer)

ID Adt1 Adt2 factor1 factor2 factor3 factor4 Race

01 1 23 1 0 0 1 3

02 2 40 0 1 0 0 1

03 1 20 0 0 1 1 2

04 2 35 1 1 0 0 3

Re: adjusted prevalence ratios or relative risk

StatDave — Wed, 29 Nov 2017 20:05:03 GMT

See this note.

You can search the SAS Notes and Samples at http://support.sas.com/notes and the list of Frequently-Asked for Statistics at http://support.sas.com/kb/30333 .

topic adjusted prevalence ratios or relative risk in Statistical Procedures

adjusted prevalence ratios or relative risk

Re: adjusted prevalence ratios or relative risk