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st: AW: help with -lrtest-

From   "Martin Weiss" <>
To   <>
Subject   st: AW: help with -lrtest-
Date   Mon, 14 Dec 2009 13:56:48 +0100


The manual entry for -lrtest- explains this story in its "Example 1", so you
can read up on it. Also note the similar story line in the entry for

webuse lbw, clear

logit low age lwt i.race smoke ptl ht ui
test age ptl
estimates store A

logit low lwt i.race smoke ht ui

lrtest A


-----Ursprüngliche Nachricht-----
[] Im Auftrag von Karen Wright
Gesendet: Montag, 14. Dezember 2009 10:31
Betreff: st: help with -lrtest-

Dear All, 
Apologies for the very obvious question, but I was hoping to double check
that I am using lrtest correctly.  If I am testing two nested models and
wish to know whether the term i have added significantly improves the model
then I can use lrtest, and a p-value of <0.05 indicates that adding the term
significantly improves the model?!
Thank you,

The Institute of Cancer Research: Royal Cancer Hospital, a charitable
Company Limited by Guarantee, Registered in England under Company No. 534147
with its Registered Office at 123 Old Brompton Road, London SW7 3RP.

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