Dear Statalisters,

Please forgive my ignorance, but is there a way to determine the best model e.g. AIC or determine a gof via a test . This is for survey data that is reporting on age-standardized rates. I cannot use the dstdize or istdize syntax because it is survey data and I cannot seem to figure out a way to do it with a code like this:
Code:
svy:  mean outcome, stdize(agecat) stdweight(std_wgt)