At 10:49 30/01/2013, aminreza Aamini wrote:
Hi all,
I am very grateful to all those who write to me
1) how i can obtain relative risk (risk ratio) in logistic regression in R.
@TECHREPORT{lumley06,
author = {Lumley, T and Kronmal, R and Ma, S},
year = 2006,
title = {Relative risk
Dear Coleagues ,
As my friend John mentined,* the measure of association from a logistic
regression is the odds ratio, not the relative risk*. but the point is in
follow-up studies, it is commonly preferred to estimate a risk ratio rather
than an odds ratio. Thats why im looking for RR in
Amin,
It is incorrect to use the relative risk as a measure of association in a
logistic regression. The measure of association in a logistic regression is
the odds ratio. The odds ratio is an approximation of the relative risk. The
approximation becomes progressively better as the disease
On Feb 3, 2013, at 8:15 AM, aminreza Aamini wrote:
Dear Coleagues ,
As my friend John mentined,* the measure of association from a
logistic
regression is the odds ratio, not the relative risk*. but the point
is in
follow-up studies, it is commonly preferred to estimate a risk ratio
Dear colleagues, I have 2 points: One opinion and one question.
1)
In one paper in a peer-reviewed journal, I read about the idea of using a
logit regression as a surrogate for the log-binomial, just adding the
numerator to the denominator ...
It’s tempting to immediately get the RR instead of
Ivan,
In reference to your part 2), in 1989 Li and Duan published a paper where
they examined the effect of using the wrong link function (
http://projecteuclid.org/DPubS?service=UIversion=1.0verb=Displayhandle=euclid.aos/1176347254).
The short version is that they found that in common models
I am curious why one would want risk ratios. Unlike odds ratios, they are
not interpretable without reference to the base risk. For example a risk
ratio of 2 cannot possibly apply to anyone with a starting risk exceeding
1/2.
I think it is most helpful to use one of the existing nomograms to
Hi all,
I am very grateful to all those who write to me
1) how i can obtain relative risk (risk ratio) in logistic regression in R.
2) how to obtain the predicted risk for a certain individual using
fitted regression model in R.
Many thanks, in advance, for your help.
Amin.
Hi all,
I am very grateful to all those who write to me
1) how i can obtain relative risk (risk ratio) in logistic regression in R.
2) how to obtain the predicted risk for a certain individual using
fitted regression model in R.
Many thanks, in advance, for your help.
Amin.
Relative risk = exp(coef(model))
--- On Wed, 30/1/13, aminreza Aamini amin.r@gmail.com wrote:
From: aminreza Aamini amin.r@gmail.com
Subject: [R] Relative Risk in logistic regression
To: R-help R-help@r-project.org
Date: Wednesday, 30 January, 2013, 4:19 PM
Hi all,
I am very grateful
)
prediction_error= lm.D90$residuals
--- On Wed, 30/1/13, aminreza Aamini amin.r@gmail.com wrote:
From: aminreza Aamini amin.r@gmail.com
Subject: [R] Relative Risk in logistic regression
To: R-help R-help@r-project.org
Date: Wednesday, 30 January, 2013, 4:19 PM
Hi all,
I am very grateful to all those
] Relative Risk in logistic regression
To: R-help R-help@r-project.org
Date: Wednesday, 30 January, 2013, 4:19 PM
Hi all,
I am very grateful to all those who write to me
1) how i can obtain relative risk (risk ratio) in logistic regression in R.
2) how to obtain the predicted risk for a certain
wrote:
Relative risk = exp(coef(model))
Only if you fit using the log link. Using the logit link, this gives
odds ratios.
--- On Wed, 30/1/13, aminreza Aamini amin.r@gmail.com wrote:
From: aminreza Aamini amin.r@gmail.com
Subject: [R] Relative Risk in logistic regression
To: R
= exp(coef(model))
Only if you fit using the log link. Using the logit link, this gives
odds ratios.
--- On Wed, 30/1/13, aminreza Aamini amin.r@gmail.com wrote:
From: aminreza Aamini amin.r@gmail.com
Subject: [R] Relative Risk in logistic regression
To: R-help R-help@r
, aminreza Aamini amin.r@gmail.com wrote:
From: aminreza Aamini amin.r@gmail.com
Subject: [R] Relative Risk in logistic regression
To: R-help R-help@r-project.org
Date: Wednesday, 30 January, 2013, 4:19 PM
Hi all,
I am very grateful to all those who write to me
1
(model))
Only if you fit using the log link. Using the logit link, this gives
odds ratios.
--- On Wed, 30/1/13, aminreza Aamini amin.r@gmail.com wrote:
From: aminreza Aamini amin.r@gmail.com
Subject: [R] Relative Risk in logistic regression
To: R-help R-help
On Jan 30, 2013, at 5:49 AM, aminreza Aamini wrote:
Hi all,
I am very grateful to all those who write to me
1) how i can obtain relative risk (risk ratio) in logistic
regression in R.
2) how to obtain the predicted risk for a certain individual using
fitted regression model in R.
You
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