Margins at quartile points of variables.

[Gary Fissel]

I have many explanatory variables that I need to generate the marginal effects (margins) at p25, p 50, and p75. I am currently having difficulty getting Stata to do this.

[Shuai Yan]

have you figure it out? I have the same problems too.

[Nick Cox]

I should not be surprised if you need to calculate the quartiles first and then pass those to margins.