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st: computation of R-squared with a non-linear model

From	marcel spijkerman <[email protected]>
To	stata stata <[email protected]>
Subject	st: computation of R-squared with a non-linear model
Date	Tue, 19 May 2009 18:54:47 +0000

Dear statalisters,

I estimate a weighted non-linear model of the following form:

 y^0.5 = (a1 + a2*X)^0.5 weighted by some other variable z.

Stata reports an adjusted R-squared of 1.000. I suspect this is not correct. How can compute the correct adjusted R-squared using untransformed variables?

Best regards,

Marcel Spijkerman 



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