I will use a variable in the June fertility supplement to define my analytic sample. Then I will link individuals in my analytic sample to themselves in the ASEC in the same year. I will not use the longitudinal nature of my sample. I do the linking only because the variable which I use to define my sample is only available in June, and the variable that is my outcome of interest is only available in ASEC. I assume that I should use FRSUPPWT to weight my data, and there might be some bias in my sample representativeness due to the attrition from ASEC to June, which cannot be addressed as I did not find any ready-made weight on the website that can address this bias. My question is, in addition to the attrition bias, is there any other source of bias that may affect my sample representativeness that I am not aware of? Thank you!