Dear Statalist,

Can anyone help with how to calculate percentage effects after estimating a quantile treatment effect estimator by Abadie, Angrist, and Imbens (2002) using ivqte Stata command. Abadie et al. (2002) in a footnote explain that ''Percentage effects were computed as the coefficient on training, divided by fitted values with the training dummy set to zero and other covariates set to means for the treated'', but not sure how this can be done using Stata's margins command. The reference to the paper is as follows: Abadie, A., J. Angrist, and Imbens, G. (2002). Instrumental variables estimates of the effect of subsidized training on the quantiles of trainee earnings. Econometrica 70: 91–117.

Thank you