Bookmark and Share

Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: update oparallel available from SSC

From   Maarten Buis <>
Subject   st: update oparallel available from SSC
Date   Tue, 22 Oct 2013 15:29:54 +0200

Thanks to Kit Baum a new update of the -oparallel- package is now
available from SSC.  The update fixes a error with the number of
degrees of freedom when factor variables were used in the -ologit-
model (thanks Richard Williams and Scott Long for pointing this out to
me) and a typo in the help file (thanks Ariel Linden for spotting it).
 To install it, type in Stata -ssc install oparallel, replace-.

-oparallel- is a post-estimation command testing the parallel
regression assumption in a ordered logit model.  By default it
performs five tests: a likelihood ratio test, a score test, a Wald
test, a Wolfe-Gould test, and a Brant test.  These tests compare a
ordered logit model with the fully generalized ordered logit model,
which relaxes the parallel regression assumption on all explanatory
variables.  Optionally, oparallel can use the bootstrap to compute the
p-values for these tests.

I hope some of you will find it useful,

Maarten L. Buis
Reichpietschufer 50
10785 Berlin
*   For searches and help try:

© Copyright 1996–2018 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   Site index