st: issue about stationarity

[amatoallah ouchen <at.ouchen@gmail.com>]

Good day Stata Community.
Sorry to bother you with this query, but I'm confronted to an issue
about stationarity

I'want to make a regression

Gt=c+log(ht)+εt

the issue is the following: Gt is a stationary process I(0) and ht
became stationary after the first differentiation I(1).

So how can'I deal with a such problem?

Thanks a lot in advance!!!

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