Hello,

I have a general doubt about PSM. The analyses of the graph (using teffects psmatch) are much better comparing before and after matching, the trend of the curves (treatment and control) are similar. But only until the propensity score is equal 0.8. This is happening for my 5 different years data.

Is it possible to use or somehow delimit the use of the propensity score from 0 to 0.8 so that I have a better matching?

What would you suggest? What can be the problem of this part of density (from 0.8 to 1)?

Thanks in advance,

Jacque