overlap violation | treatment-effects estimation for observational survival-time data

[Luis Pecht]

Hi gurus,

I am running stteffects ipwra .., atet vce(cluster ... ) and received:

overlap violation; there are 12 observations with a probability weight less than 1.0e-05
r(498);

unfortunately I can not offer a sample dataset, this time.

My frustation here is that Stata mentions "there are 12 observations with ..." but, it did not give me any clue which they are.

anyone here knows how to locate them ? thks

[Maarten Buis]

The osample() option creates a new variable that indicates which observations are the troublemakers.

[Luis Pecht]

thanks Maarten, the help file clearly mention osample() option. I missed it, somehow.