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Re: st: poisson - bootstrapping or clustering?
At 07:12 AM 9/12/2006, Scott Cunningham wrote:
I'm estimating a model of sexual partners using -xtpoisson- and -
poisson-. The data suffers from overdispersion, and so I'm trying to
Could you try setting different seeds and see if you can get one that
does not produce any failures?
correct for that using bootstrapping within -xtpoisson-. But as I
posted the other day, I'm having trouble recovering the marginal
effects in post-estimation. I have a memory of someone telling me
that the cluster() option within -poisson- can correct for
overdispersion. Does anyone with experience in count data have
recommendations? This is micro-level data from the National
Longitudinal Survey of Youth (1997). The problem with -mfx, dydx-
appears to be that bootstrapping within -xtpoisson- had numerous
failures in calculating the standard errors. That's at least what I
think is going wrong.
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
WWW (personal): http://www.nd.edu/~rwilliam
WWW (department): http://www.nd.edu/~soc
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