Hello everyone,

I am using Stata 17, and trying out the example from the npregress series manual.
. use https://www.stata-press.com/data/r17/dui
. npregress series citations fines
Was able to replicate the example.
However, I am unable to extract R2 or R2-adjusted values.
The manual says that "npregress series stores the following in e(): e(r2) R2"
But I get nothing (not even an error) with
. display e(r2)
How else can I retrieve the R2 value?
All other options such as "display e(N)" etc. are returning the expected values.

On performing the usual parametric regression "regress citations fines" I am able to extract R2 easily.

Please advise.