Installing polynomial regression STATA 18.5

[Doug DeMoulin]

Dear STATA Community,

I am in the process of trying to install the polynomial regression for STATA version 18.5 and cannot seem to find the proper code for it. Originally, I came across the polynomial code was "fp" but it fails to install. Does anyone happen to have what I need to install or any advice for polynomial regression?

[Rich Goldstein]

-fp- for fractional polynomials is built in to Stata - try

h fp

but, of course it is not the only way to use polynomials in a regression command; factor variable notation is your friend here; see

h fvvarlist