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Re: st: ORs for non-rare outcomes

From   Ronán Conroy <>
To   "statalist" <>
Subject   Re: st: ORs for non-rare outcomes
Date   Thu, 08 Apr 2004 15:40:56 +0100

on 08/04/2004 11:25, Marcello Pagano at wrote:

> Some have this aversion to odds which is difficult to understand. Odds
> are just as natural as probabilities, ask anyone at a race track.
> Indeed, as someone pointed out, here is a sector of society not known
> for its intelligence, punters, who understand odds thoroughly, but
> health scientists, some even pursuing a Nobel, for some reason cannot
> understand odds?  It does not compute.

I can explain a risk ratio to anyone. I seem to be unable to do the same for
an odds ratio. Odds are OK, and can be understood by anyone. But I think
even the racing fraternity would have trouble understanding the ratio
between the odds of each of two horses winning.


Ronan M Conroy (
Lecturer in Biostatistics
Royal College of Surgeons
Dublin 2, Ireland
+353 1 402 2431 (fax 2764)

Just say no to drug reps

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