dear friends, I want to age-standardize the prevalence of different groups divided by agegroup, but I don't know how to implement it in SAS system. And some questions are still remaining. First, can I age-standardize the prevalence of different groups divided by agegroup? and second, how to write the code? here is my code ,but it seems that the prevalence is not age-standardized or only the total prevanlence is adjusted and others isn't. proc format; VALUE riagendr 1 = 'Male' 2 = 'Female'; VALUE agegroup 1 = '18-44' 2 = '45-64' 3 = '65+'; value weightcat 1="bmi 0-24.9" 2="bmi 25-29.9" 3="bmi 30-34.9" 4="bmi 35+"; VALUE waistgroup 1="Abdominal obesity" 0="no Abdominal obesity"; run; PROC SURVEYREG data=diffcomcat nomcar; STRATA sdmvstra;CLUSTER sdmvpsu;CLASS agegroup;WEIGHT wtmec12yr;DOMAIN sub; MODEL comcat = agegroup /noint solution vadjust=none; ESTIMATE 'total' agegroup 0.5305 0.2992 0.1703; TITLE 'Age-standardized prevalence of persons 18 years and older with comcat-age'; ods OUTPUT estimates=comcatageadj_prev_total; run; help please!!!!!!!
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