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May 22, 2023 · The odds ratio is a ratio of two sets of odds: the odds of the event occurring in an exposed group versus the odds of the event occurring in a non-exposed group. Odds ratios commonly are used to report case-control studies. The odds ratio helps identify how likely an exposure is to lead to a specific event.
- Steven Tenny, Mary R. Hoffman
- 2023/05/22
- University of Nebraska Medical Center
Aug 1, 2010 · What is an odds ratio? An odds ratio (OR) is a measure of association between an exposure and an outcome. The OR represents the odds that an outcome will occur given a particular exposure, compared to the odds of the outcome occurring in the absence of that exposure.
- Magdalena Szumilas
- 2010
Odds ratios are used to compare the relative odds of the occur-rence of the outcome of interest (e.g. disease or disorder), given exposure to the variable of interest (e.g. health characteristic, aspect of medical history).
Apr 14, 2011 · Summary. This chapter contains an overview of statistical methods for categorical data in general and binary outcomes in particular, with an emphasis on the odds ratio and its applications in psychiatry.
- Garrett M. Fitzmaurice, Garrett M. Fitzmaurice, Caitlin Ravichandran, Caitlin Ravichandran
- 2011
Aug 1, 2010 · This article breaks down the odds ratio by reviewing the concepts and calculations of probability and odds, and discusses how to interpret an odds ratio, and how these ratios can be useful in real-world applications.
Explaining odds ratios. J Can Acad Child Adolesc Psychiatry. 2010 Aug;19 (3):227-9. Author. Magdalena Szumilas 1. Affiliation. 1 Research Associate, Sun Life Financial Chair in Adolescent Mental Health, IWK Health Centre & Dalhousie University, Maritime Outpatient Psychiatry, Halifax, Nova Scotia. PMID: 20842279. PMCID: PMC2938757.
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The odds ratio is a good estimate of relative risk when probability of the outcome—development of SAD in this study—is small. 2 However, odds ratios grow increasingly larger than relative risks as outcome probabilities increase toward 0.5 and can inflate perceived magnitudes of association or effect. 3 Even when presented clearly, the odds ...
