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st: testing levels as well as the linear difference between 2 vars


From   SC Wainwright <s9907040@sms.ed.ac.uk>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: testing levels as well as the linear difference between 2 vars
Date   Tue, 12 Apr 2005 15:49:51 +0100

hello,

i would like confirmation of the appropriateness of my solution to the
following;

i have 2 rhs continuous variables, say A and B and would like to test if the
levels of either are significant, in addition to their linear difference, 
without running separate regressions.

i am using the menu post-estimation linear tests to achieve this, plus the
accumulate option;

test (A-B==0)

test (A==0), accumulate

where such test returns the relevant chi-square statistic, does this confirm the
separate effect of the level of A, independently of the way it determines A-B ?

many thanks

claire
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