This is a guess - but the term "crude" odds ratio might mean the odds ratio
estimated solely from the values of y (without regard to the x's).
i.e. "crude"odds = (no. of y's = 1)/(no. of y's = 0)
Al Feiveson
-----Original Message-----
From: Jocelyne Séguin [mailto:[email protected]]
Sent: Wednesday, October 09, 2002 7:11 AM
To: [email protected]
Subject: st: crude odds ratio (crude?)
I have to perform logistic regressions.
For references, I use:
Stata (manual and software)
Applied Logistic Regression (Hosmer & Lemeshow)
I'm reading some articles where logistic regressions are used: crude
odds
ratio are reported. Here, crude seems to be a technical word. Crude
odds
ratio is not in the index of Applied Logistic Regression. From Stata, a
net
search with crude as a key word (crude, crude odds ratio) produced not
matches.
Suppose that y , x1, x2, x3, x4, x5 are variables coded 0-1.
Here, y is the dependent variable,
and x1, ..., x5 are the independent variables.
I have two questions.
When crude odds ratio of x1 are reported,
does it come from the syntax
logistic y x1 ?
When odds ratio of x1 adjusted for x2, x3 and x4, are reported
does it come from the syntax
logistic y x1 x2 x3 x4 ?
Thank you.
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* For searches and help try:
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* http://www.ats.ucla.edu/stat/stata/
