margins gender, predict(mean time)
I did not check that, as I don't have Stata on this computer.
However, the logic behind margins
is that if you do not specify the predict()
option, margins
will assume the default prediction for your model. In case of streg
you can look up in help streg_postestimation
that the default is the median (which makes perfect sense for this type of model). However, you can predict the mean time, and the option is called mean time
.