For linear you should have -1 0 1.
Paul R. Swank, Ph.D.
Professor, Department of Pediatrics
Medical School
Adjunct Professor, Health Promotions and Behavioral Sciences
School of Public Health
University of Texas Health Science Center at Houston
-----Original Message-----
From: SPSSX(r) Discussion [mailto:
[hidden email]] On Behalf Of Kuila
Sent: Thursday, July 19, 2012 2:45 PM
To:
[hidden email]
Subject: TEST subcommand in MIXED for linear dose effects
Hi,
New user, please forgive errors!
I test fixed effect of DRUG with 3 levels and wish to see if there is a dose-dependent response in my outcome. I am trying to use TEST subcommand but get "wrong number of coefficients" or "L matrix not estimable"
syntax is
/TEST = 'Linear Trend Contrast 1 v 3' TEST_drug -1/2 1 1/2
I have looked all through the manual and online help but found no better information. What am I doing wrong?
thank you kuila
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