longitudinal weighting adjustment for nonresponse since the last wave
I am not an expert in sampling weight. Please correct me if I am wrong. Thanks.
I am looking at the technical details of weighting adjustments. In the user guide (2018 version) p76 220.127.116.11, it says
"In the model for proxy and main interviews, covariates were taken from the Wave (n-1) proxy interview (or the equivalent items from the main interview), household grid and household questionnaire."
I suppose that the covariates should be some variables from the files. Could you please provide more info about this? For example, what covariates are taken into account, and why these covariates are selected?