I am using inverse weights in a panel data analysis (fixed effects) in Stata, to see if my regression coefficients are the same after I reweight the analysis to better represent respondents most similar to sample attritors.
In the analysis I reweight using
reg y x [pw=ipw]
I found the following description of pweighting online:
PWEIGHT= person (case) weighting.
PWEIGHT= allows for differential weighting of persons. The standard weights are 1 for all persons. PWEIGHT of 2 has the same effect on item estimation as putting the person and responses into the analysis twice.
I think this is a really neat way of thinking about weighting. But is this actually what pweighting, and particularly Stata, does? The description is from a different statistical software.
If not, then what (in non-technical terms if possible), is Stata doing when it pweights in order to give more weight to some individuals in the data, and less to others?