9/23/08, Bunny, lautloscrew.com <[EMAIL PROTECTED]> wrote:
From: Bunny, lautloscrew.com <[EMAIL PROTECTED]>
Subject: [R] odds ratio: how to create reference
To: r-help@r-project.org
Date: Tuesday, September 23, 2008, 4:06 AM
HI there,
i know this is a basic question, though i ne
]> wrote:
From: Bunny, lautloscrew.com <[EMAIL PROTECTED]>
Subject: [R] odds ratio: how to create reference
To: r-help@r-project.org
Date: Tuesday, September 23, 2008, 4:06 AM
HI there,
i know this is a basic question, though i need some help because this
is somewhat away from my cur
You notice that your reference is for the SAS-procedure glm?!
To play around and since you provided no data example I've created some
data (by an idea from Frank Harrell jr.
http://www.biostat.wustl.edu/archives/html/s-news/2002-04/msg00103.html)
n <- 30
treat <- rep(c('a','b','c'), length.ou
Hi,
You can state a probability p as odds p/(1-p) and vice versa. To get an
odds ratio you need actually two odds. Then you can get the odds ration
of being/having "a" instead of "b" by odds(a)/odds(b), where "b" is the
reference level.
If you fit a logistic regression model (which means that y
HI there,
i know this is a basic question, though i need some help because this
is somewhat away from my current issue, but nevertheless interesting
to me... Lets assume i have some estimated probabilities, say
estimated by a logit model. i know i can also state them as an odds
ratio.
N
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