Re: [R] propensity score adjustment using R

Ben Domingue wrote: > > I'm not quite sure what you mean. If all you need is propensity > scores to run an IPW analysis, the fitted values should work. Having > many binary covariates shouldn't be a problem, the whole point of the > propensity score is boiling down many dimensions to a single

Re: [R] propensity score adjustment using R

Frank E Harrell Jr wrote: > > > > That is a high variance procedure as compared with covariate adjustment > using the propensity score, or stratification. > > Frank Harrell > Ah, wait what if I got very high dimensional X ? Even with 20 binary covariates i would end up with more than 1 m

Re: [R] propensity score adjustment using R

Frank E Harrell Jr wrote: > > That is a high variance procedure as compared with covariate adjustment > using the propensity score, or stratification. > > Frank Harrell > Yes, I guess the foo$fitted.values was the syntax i missed. I know this method is not optimal and that it yields high va