st: beta coefficients

["Alex Barr" <mralexbarr@hotmail.com>]

In a model with state dummies SD, time dummies TD and state-specific trends 
ST (constructed as state dum multiplied by centred linear trend): suppose 3 
states, 3 years

Y(ist) = a + b2 S2(s) + b3 S3(s) + c2 T2(t) + c3 T3(t) + d2 ST2(st) + d3 
ST3(st) + g�X(ist)

The estimated state-year effects are as follows.

state	year	Estimated effect
1	1	0
1	2	c2
1	3	c3
2	1	b2+d2+0
2	2	b2+2d2+c2
2	3	b2+3d2+c3
3	1	b3+d3+0
3	2	b3+2d3+c2
3	3	b3+3d3+c3
etc

I want to construct col.3 in stata and save it as data. Any help would be 
much appreciated

----Original Message Follows----
From: Marcello Pagano <pagano@hsph.harvard.edu>
Reply-To: statalist@hsphsun2.harvard.edu
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: RE: Hypergeometric Distribution
Date: Wed, 22 Aug 2007 10:43:43 -0400

I looked at --ssizebi-- but it seems to be focused on power and sample 
sizes.

Newson, Roger B wrote:

> Thanks to Marcello for telling us all about this recently-published
> algorithm, which looks very useful. A search on
>
> findit hypergeometric
>
> in Stata finds a single reference (to a SSC package), which was
> distributed as long ago as 1999. This suggests that the new algorithm
> might be a good candidate for implementation in Mata by Marcello, or by
> anybody else with the time and inclination to do so.
>
> Roger
>
>
> Roger Newson
> Lecturer in Medical Statistics
> Respiratory Epidemiology and Public Health Group
> National Heart and Lung Institute
> Imperial College London
> Royal Brompton campus
> Room 33, Emmanuel Kaye Building
> 1B Manresa Road
> London SW3 6LR
> UNITED KINGDOM
> Tel: +44 (0)20 7352 8121 ext 3381
> Fax: +44 (0)20 7351 8322
> Email: r.newson@imperial.ac.uk Web page: www.imperial.ac.uk/nhli/r.newson/
> Departmental Web page:
> http://www1.imperial.ac.uk/medicine/about/divisions/nhli/respiration/pop
> genetics/reph/
>
> Opinions expressed are those of the author, not of the institution.
>
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Marcello
> Pagano
> Sent: 22 August 2007 14:31
> To: statalist@hsphsun2.harvard.edu
> Subject: st: Hypergeometric Distribution
>
> Does anyone have or know of Stata code to calculate the Hypergeometric 
> Distribution accurately?
>
> See Journal of Discrete Algorithms ,  Volume 5 ,  Issue 2  (June 2007) 
> Pages: 341-347 for an article by Berkopec, HyperQuick algorithm for 
> discrete hypergeometric distribution 
> <http://portal.acm.org/citation.cfm?id=1240586&coll=GUIDE&dl=GUIDE&CFID=
> 27443384&CFTOKEN=80678482>.
>
> Thanks,
>
> m.p.  *
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