I am wondering how I can get a composite weight from cem_weights and the sampling weight (the inverse of the probability of a unit to be selected) from my survey data.

Shall I simply use cem_weight*sampling_weight as a new sampling weight? If not, is there any proper way to deal with it? 

I am using STATA. cem_weight is supposed to be used as "iweight" while sampling weight is supposed to be used as "pweight". I am worried about the compatibility issue to use cem_weight*sampling_weight as a weight.

Thanks.

Best.

Sifan Zhou