Recalculating IPW after stratification This may seem a bit odd as a question.
If one stratifies a dataset using a variable, which was also used in IPW calculation, one will have to recalculate the weight, right?
I am asking because there is a part of me thinking that since it is a binary variable for IPW calculated via logistic regression, all male participants will weigh the same. Therefore, recalculating the weight will be somewhat redundant. Meanwhile, sex was weighted, hence, I should remove it... So the question is, do I need to recalculate the IPW after I divide the data into male-only and female-only? My instinct is yes.
Any thought?

If you just want subpopulation estimates you do not need to recalculate weights.
You do need to analyse it as a subpopulation, not just subset the data
