Hello,    I am not sure if I should post this here as this technically isn't a SAS question..(but somewhat related). I have about 180 subjects in my dataset, and primarily interested in examining the relationship between three modifiable behavioral factors (two binary and one three-level nominal) that could be potentially associated with the outcome (death; all 180 subjects). Because the data wasn't collected for research per se, I do not have a reference or a control group to compare. My question is: is there any statistical analyses I can do to examine the relationship between these three modifiable risk factor variables? I tried chi-sq and it was helpful, but I am curious to find out if there are other tests I could perform. Can tetrchoric or polychoric (PROC FREQ) corr or performing factor analyses (using the matrix from the correlation procedure) be meaninful in any way?       Thank you!     ... View more

Hello,    I am trying to find duplicates and only keep the unique obs (doesn't matter if it is the first or the last record). I used the variable called Plural to identify them and Plural has three categories (1, 2, and 3). Plural=1 means there are no duplicates, Plural=2 means there are two records (per person) and Plural=3 means there are three records (per person). I tried:    data nodup;  set dup  where plural >1;  by time;  if first.time;run;    and obviously, the dataset nodup only has the one w/ Plural>1. Is there any way I can keep every record in the dataset (plural=1, 2, or 3), but remove duplicates if Plural>1?    Thank you! ... View more