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Help on nbinreg                                                Hilbe 8Feb1998
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Maximum-likelihood Negative Binomial regression with robust and cluster 
options

Command line:

  ^nbinreg^ depvar [varlist] [weight] [^if^ exp] [^in^ range]  
  [, ^lt(^#^) ir^r ^off(^var^) nol^og^ rob^ust ^score^(var) ^score2^ 
^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
^score2^       = creates a variable named score2: score of alpha parameter

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

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

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

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Joseph Hilbe
Arizona State University
hilbe@@asu.edu