.-
help for ^nbinreg^                                        (STB-45: sg91)
.-

Maximum-likelihood Negative Binomial regression with robust and cluster
----------------------------------------------------------------------- 
options
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Command line:

  ^nbinreg^ depvar [varlist] [weight] [^if^ exp] [^in^ range]  
  [, ^lt^olerance^(^#^)^ ^ir^r ^of^f^(^var^)^ ^nolo^g ^r^obust ^sc^ore^(^var^)^ ^score2^ ^cl^uster^(^var^)^]
  

Options
-------

^level(^#^)^ specifies the confidence level, in percent, for confidence inter-
    vals of the coefficients; see help @level@.

^irr^ specifies that parameter estimates are to be displayed in exponential
    form; standard errors and CIs adjusted.

^offset()^ specifies the offset variable - log raw var prior to using as offset.

^nolog^ suppress display of the iteration log.

^cluster()^ identifies variable used for clustering.

^robust^ displays robust variance estimator; implied when ^cluster()^
    is specified.

^score()^ creates a variable with score value.

^score2^ creates a variable named ^score2^ containing the score of alpha
    parameter.

^ltolerance(^#^)^ is the tolerance for convergence; it should never need to
    be specified.


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


Examples
--------

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

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


Author
------

      Joseph Hilbe
      Arizona State University
      hilbe@@asu.edu 


Also see
--------

    STB:  sg91 (STB-45)
 Manual:  [R] nbreg, poisson, glm
On-line:  help for @nbreg@, @glm@