Are you referring to the OR and P-value that is given after the ptl after the second logistic?
________________________________
From: [email protected] on behalf of Svend Juul
Sent: Mon 8/28/2006 6:23 AM
To: [email protected]
Subject: Re: st: ptrend for adjusted ORs
Jennifer wrote:
I am trying to calculate the ptrend for an adjusted OR.
I know that the command ptrend or ptrendi works for my
crude OR, but is there a way to include the other
variables that I am adjusting with.
----------------------------------------------------
Try this:
webuse lbw.dta, clear
xi: logistic low i.ptl i.race i.smoke
xi: logistic low ptl i.race i.smoke
The first -logistic- command displays the 4-category
-ptl- as 3 dummy variables. In the second you get a
single OR, and it can be interpreted as a trend test,
adjusted for race and smoke.
Hopes this helps
Svend
__________________________________________
Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6
DK-8000 Aarhus C, Denmark
Phone: +45 8942 6090
Home: +45 8693 7796
Email: [email protected]
__________________________________________
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