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Definition (NCI)
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The ratio of the odds of an event occurring in one group to the odds of it occurring in another group, or to a sample-based estimate of that ratio.
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Definition (NCI_NCI-GLOSS)
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A measure of the odds of an event happening in one group compared to the odds of the same event happening in another group. In cancer research, odds ratios are most often used in case-control (backward looking) studies to find out if being exposed to a certain substance or other factor increases the risk of cancer. For example, researchers may study a group of individuals with cancer (cases) and another group without cancer (controls) to see how many people in each group were exposed to a certain substance or factor. They calculate the odds of exposure in both groups and then compare the odds. An odds ratio of one means that both groups had the same odds of exposure and, therefore, the exposure probably does not increase the risk of cancer. An odds ratio of greater than one means that the exposure may increase the risk of cancer, and an odds ratio of less than one means that the exposure may reduce the risk of cancer.
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Definition (MSH)
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The ratio of two odds. The exposure-odds ratio for case control data is the ratio of the odds in favor of exposure among cases to the odds in favor of exposure among noncases. The disease-odds ratio for a cohort or cross section is the ratio of the odds in favor of disease among the exposed to the odds in favor of disease among the unexposed. The prevalence-odds ratio refers to an odds ratio derived cross-sectionally from studies of prevalent cases.
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| Concepts |
Quantitative Concept
(T081)
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| MSH |
D016017
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| English |
Cross Product Ratio, Cross-Product Ratio, Cross-Product Ratios, Odds Ratios, Odds, Relative, Ratio, Cross-Product, Ratio, Risk, Ratios, Cross-Product, Ratios, Risk, Relative Odds, Risk Ratio, Risk Ratios, RELAT ODDS, odd ratio, odds ratio, risk ratio, Odds Ratio, relative odds |
| Swedish |
Oddskvot
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| Finnish |
Kerroinsuhde
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| French |
OR (Odds Ratio), Rapport de chances, Risque relatif approximatif, Odds ratio |
| Russian |
REZUL'TATOV PEREKRESTNYKH KOEFFITSIENT, KOEFFITSIENT RAZLICHII V CHASTOTE SLUCHAEV, RISKA KOEFFITSIENT, КОЭФФИЦИЕНТ РАЗЛИЧИЙ В ЧАСТОТЕ СЛУЧАЕВ, РЕЗУЛЬТАТОВ ПЕРЕКРЕСТНЫХ КОЭФФИЦИЕНТ, РИСКА КОЭФФИЦИЕНТ |
| Japanese |
オッズ比, 乗積比, 危険比 |
| Italian |
Odds relativo, Rapporto crociato, Odds ratio |
| Czech |
podíl šancí, poměr rizik, poměr šancí |
| Polish |
Wskaźnik ryzyka, Iloraz szans |
| Norwegian |
Odds ratio, Forholdet mellom to odds, Kryssproduktforhold, Oddsforhold, OR |
| Spanish |
Desigualdad Relativa, Razón de Diferencia, Oportunidades Relativas, Razón de Posibilidades, Posibilidades Relativas, RO, Razón de Oportunidades, Odds Ratio, Producto Cruzado, Razón de Odds, Razón del Producto Cruzado, Cociente de Probabilidades Relativas, Posibilidad Relativa, Razón de Oposiciones, Razón de Productos Cruzados, Oportunidad Relativa, Razón de Riesgo, Relación Referencia-Producto |
| Portuguese |
Razão de Diferença, Odds Ratio, Razão de Produtos Cruzados, Taxa de Risco, Razão de Chances |
| German |
Cross-Product Ratio, Odds Ratio, Risikoquotient |
| Dutch |
Oddsratio, Ratio, cross-product, Risicoratio |
