MathLiveOdds ratio
The odds ratio compares the odds of an event between two groups, dividing the odds in the first group by the odds in the second. It is used in epidemiology and statistics to quantify how strongly two events are associated.
\frac{p_{1}/(1-p_{1})}{p_{2}/(1-p_{2})}What the symbols mean
| probability of the event in the first group | |
| probability of the event in the second group |
About this formula
- FieldStatistics
- TopicMeasures of association
- LevelUniversity
- Also calledOR, odds ratio formula, ratio of odds, association measure between two events, comparing odds of two groups, odds ratio epidemiology
- SourceWikidata Q1862216
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