.-
help for ^_perhs^ - 1.6.2 - 2/20/00
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Utility to determine names and number of right hand size variables
in regression models
------------------------------------------------------------------

    ^_perhs^

Description
-----------

^_perhs^ returns the number of right hand side variables and their names
    for regression models.

Works with regress, logit, probit, ologit, oprobit, mlogit, tobit,
    zip, zinb, poisson, nbreg.

Returns
-------

r(nrhs)  : local with number of rhs variables, excluding intercept.

r(rhsnms): local with names of rhs variables.

Examples within a program
-------------------------

    ...
    _perhs
    local nvars = `r(nrhs)' + 1
    local varnms "`e(depvar)' `r(rhsnms)'"

    local i = 1
    while `i'<=`nvars' {
        local nmtoget : word `i' of `varnms'
        :::
        local i=`i'+1
    }

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Authors: J. Scott Long and Jeremy Freese
         www.indiana.edu/~jslsoc/spost.htm
         spostsup@@indiana.edu