Weight when using variables from June and ASEC

Since you define your sample using the June supplement, the proper weight to use is FRSUPPWT. However, you may also be interested in adjusting for who can be linked across these samples (due to both the rotating nature of the CPS and other factors that affect the sample such as people moving). This requires generating your own weights using iterative proportional fitting (ipf) or raking with FRSUPPWT as the base weight. IPUMS provides sample code for doing so in Stata. You would need to substitute the provided extracts with your own sample months and change the do-file to reflect the months and years that you’re deriving weights for. Feel free to reach out if you have any trouble generating these weights. No other potential sampling biases come to mind, but I would suggest taking a look at the fertility supplement sample notes as well as the universe and comparability sections for your variables of interest to see if there are any other issues you need to consider.