I need to create a control group that has the same characteristics as the target population. I can use the following to get a random sample:
PROC SURVEYSELECT DATA=sel OUT=target METHOD=SRS SAMPRATE=.5 SEED=2;
STRATA momage gravidity fplgr smoke med_rsk lowwt bmi marstat;
RUN;
However, this is code from a different programmer and I don't really know what it's doing. This is the Target dataset, a second dataset has the universe of non-selected members for the Control group.
Is there a better method? Is there anything I should adjust? Thanks