09-14-2012 10:36 PM
I try to perform a conditional logit model with SAS and I need to use a weighting variable. However, the two procedures I know to perform a conditional logit doesn't allow this option. The first procedure is PROC MDC in which the statement WEIGHT doesn't exist. The second procedure is PROC LOGISTIC with the option STRATA, but the log says that the WEIGHT statement is not allowed when a STRATA statement is specified. Note that my weight variable isn't an integer variable (it's goes from 0.2 to 2.6), meaning I can't just multiply observations by their own weight.
Can someone please help me to solve my problem?