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Re: st: Cox box + tobit


From   "Austin Nichols" <austinnichols@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Cox box + tobit
Date   Mon, 3 Apr 2006 17:00:43 -0400

Type -help boxcox- for a primer, but if I were you, and I knew
something about your data, I might
. gen negy = -(y)
. poisson negy xvars, robust
since poisson is consistent (for a non-negative Y var) under very weak
assumptions.

On 4/3/06, golnaz s <golnaz80@gmail.com> wrote:
> Dear all,
> How can I estimate CoxBox and tobit in stata?
> my dependent variable are zero or negative.
> Thanks
> Golnaz Sedigh

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