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Help on poisml                                                Hilbe 13Dec1997
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Maximum-likelihood Poisson regression

Command line:

  ^poisml^ depvar [varlist] [weight] [^if^ exp] [^in^ range]  
  [, ^lt(^#^) ir^r ^off(^var^) nol^og^ rob^ust ^score^(var)^ cl^uster(var)]
  

^lt(#)^        = tolerance for convergence
^irr^          = parameter estimates displayed in exponential form; standard 
                 errors and CIs adjusted
^off(str)^     = offset variable - log raw var prior to using as offset
^nolog^        = no display of iteration log
^robust^       = displays robust variance estimator; auto w cluster
^cluster(str)^ = identifies variable used for clustering 
^score(str)^   = creates a variable with score value


Results may be redisplayed by entering the command. Exponential form and 
C.I. level are allowed as options without reestimation.


Examples
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 . ^poisml studytim died drug2 drug3, irr nolog^
 
 . ^poisml infected cases cd4 cd8, nolog irr off(cases) cluster(prov)^

 . ^poisml, level(90)^    [redisplay]

Also see
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Manual:  [5s] poisson, glm
On-line:  help for @poisson@, @glm@

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Joseph Hilbe
Arizona State University
atjmh@@asuvm.inre.asu.edu 
jhilbe@@aol.com