At 11:25 21/04/2005, Ronan Conroy wrote:
I have a reviewer who is grumbling about the use of 'relative risk
ratio' to describe the effect estimates from multinomial logistic
regression. And it's the second time this has happened. The reviewer
feels that they ought to be called odds ratios, to prevent confusion
with relative risks (and that is a good point).
Thanks for bringing this confusing issue up for discussion.
On 2005-04-21, at 12:56, Roger Newson wrote:
The "RRR" of -mlogit- is definitely not a relative risk ratio
I have always assumed that the RRRs from -mlogit- were risk ratios and
not odds ratios - because they say so and because the manual describe
the exponentiated coefficients from -mlogit- as the ratio of two
probabilities/risks (p. 507). The coefficients from the -logit- is (of
course) described as the log of the odds ratio (p. 329).
However, it is easy to see that both produce the same (log) odds
ratios, at least when the outcome is binary.
What is going on here? Why name odds ratios risk ratios?
At 11:25 21/04/2005, Ronan Conroy wrote:
Has anyone else experienced the problem? Is there a more useful way
of describing RRRs out there?
How about Relative Odds Ratio (ROR)?
Michael
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