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Re: st: oglm program now available at ssc

From   Phil Schumm <>
Subject   Re: st: oglm program now available at ssc
Date   Fri, 20 Jan 2006 04:33:06 -0600

On Jan 19, 2006, at 11:17 AM, Richard Williams wrote:
-oglm- was inspired by SPSS's PLUM command and its results have been verified by checking it against PLUM.

I think it's worth noting here that PLUM was originally a program written by Peter McCullagh, whose 1980 paper (Regression Models for Ordinal Data, JRSS, B 42, 109-142) laid out much of the foundation for ordinal regression models. I have no idea how SPSS came by this, or whether their implementation bears any resemblance to the original.

-- Phil

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