Hello,
I'm a doctoral student in Epidemiology. For some projects, I need to analyze data from National databases, such as, BRFSS, NHANES, etc. and I generally use SAS 9.2 or 9.3 for analysis. One question that I have is: how do we get the weighted rates, or, proportions? Because, most of the surveys (even if it is a small survey) uses a stratified/ cluster/ multistage sampling procedure; some groups are oversampled and they don't use a simple random survey.
In many publications that have used these kind of data, I find that SUDAAN has been used (sometimes SAS-callable SUDAAN). I am wondering whether it is possible to adjust for survey design just by some specific commands in SAS; or, do we always need something else, like SUDAAN. I have heard about the proc survey procedures, but haven't ever used them. Do they account for the survey design?
I would appreciate any suggestions on this.
Thanks,
Deep