Two questions about weights
I have two questions about weights that perhaps you can help me with.
First, the documentation states that the right weight depends on the 'lowest' questionnaire that you are using. e.g. if you are using information from the adult interview and adult & proxy interview, you should use the adult interview weights. Can you explain to me why these weights vary, or point me to a source which could explain? I am basically wondering what to do if we want to include some questions not on the proxy questionnaire, but I am happy to make some assumptions for proxies.
Second, in the harmonised BHPS there seems to be one (set of) weights if we want to include proxies and non-respondents - lewght - and one if we want to just include those that give a full interview - lrwght. What should I do if we want to perform analysis on full respondents and proxies, but not non-respondents?
Grateful for any help.