Of course, one way is to define a constraint so that the coefficient
of the offset variable equals 1, and then include this offset variable
into covariate list. I just wonder if there is a more convenient way
to achieve this.
Shige
On Fri, Feb 5, 2010 at 8:36 AM, Shige Song <[email protected]> wrote:
> Dear All,
>
> I am trying to estimate a Poisson selection model using SSM, a wrapper
> of GLLAMM. Although GLLAMM has the "offset()" option, SSM does not
> seem to have one. In this case, how do I incorporate an "offset" or
> "exposure" variable into the model? Many thanks.
>
> Best,
> Shige
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