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st: Poisson regression - stratified


From   Ricardo Ovaldia <ovaldia@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Poisson regression - stratified
Date   Mon, 8 Mar 2004 06:41:11 -0800 (PST)

Dear Stata users,

Is there a way to fit a Poisson regression to
stratified data? 

For example I have the following dataset:

. cl  x  i1 i2 stratum

             x         i1         i2    stratum
  1.        27          0          1          1
  2.        18          0          1          2
  3.        12          1          0          2
  4.        15          0          1          2
  5.        14          1          0          2
  6.         9          1          0          3
  7.         8          1          0          3
  8.        13          0          0          4
  9.        11          0          1          4
 10.        26          1          0          4
 11.         3          1          0          5
 12.         5          1          0          5
 13.        10          0          0          5
 14.         7          0          0          5
 15.         1          0          0          6

Where –x- is a count, d1 and d2 are dummies, and
stratum is a stratification variable.

I would like to fit

. poisson x d1 d2   <-- stratified by –stratum-

Any suggestions?

Thank you in advance,
Ricardo


=====
Ricardo Ovaldia, MS
Statistician 
Oklahoma City, OK

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