Dear Statalist users,
I wish to run a double hurdle model in STATA 10.0. How can I proceed?
Martins
--- On Fri, 9/18/09, Johannes Schoder <[email protected]> wrote:
> From: Johannes Schoder <[email protected]>
> Subject: st: question concerning clustering - second try
> To: [email protected]
> Date: Friday, September 18, 2009, 6:44 AM
> Dear Statalist Users:
>
> I haven't received any feedback so I hope my question is
> not too stupid:
> I am estimating the impact of the number of deaths per
> county and cause
> of death on the age at death per county and cause.
> I have information for each county: on the number, the mean
> age at
> death, and the cause of death.
> The model looks like that:
>
> xi: reg MeanAge_death log_n_death [aweight=n_death]
>
> where MeanAge_death is the average Age at death in county i
> due to cause c
> n_death: Number of death in county i due to cause c
>
> I assume that I have to cluster my standard errors since
> the
> observations within county i might be correlated within
> counties?
> Then my model would simply look like:
>
> xi: reg age_death_i,c log_n_death
> [aweight=n_death], robust
> cluster(county)
>
> But I am not sure if I also have to cluster according to
> different cause
> of death?
> Thanks a lot for any suggestion.
> Johannes
>
>
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