odds ratio


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odds ratio

[′ädz ‚rā·shō]
(statistics)
The ratio of the probability of occurrence of an event to the probability of the event not occurring.
References in periodicals archive ?
From the definitions above, we immediately see that the three measures have quite different ranges; both the relative risk and odds ratio vary between 0 and ~, while the risk difference is limited to a much smaller interval between -1 and 1.
As aforementioned, rare events caused difficulty in estimation of odds ratio due to the occurrence of zeros or small observed counts in numerator or in denominator or in both, resulting in the large standard error and therefore less precise confidence interval.
When stratified by age, the odds ratio for new IBD diagnosis in adults was 1.
The odds ratio for current smoking were similar for men (OR=3.
In contrast to the rheumatologic disorders, studies of adults with IBD have found associations of similar or slightly greater strength than among children with the other immune-mediated disorders, including odds ratios of 1.
These results are presented first because they indicate the make-up for each geographic area/fiscal year and serve the basis in calculating the overall or aggregated odds ratio.
The ratio of exposed to nonexposed controls will estimate the exposure odds (b/d) of the noncases, and the odds ratio obtained in the prevalence case--control study will therefore estimate the POR in the source population (2.
For both men and women working in the chemical industry there were odds ratios of 5.
Among comorbid conditions, the highest adverse event odds ratio was in patients with chronic renal disease, at 1.
Of the 2,505 children with influenza in that group, 2% experienced an adverse out-come with an adjusted odds ratio of 4.
The analysis showed that the odds ratio for a case of intussusception among those patients with a previous bacterial gastrointestinal infection was 40.
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