# Odds ratio

The **odds ratio** ^{[1]}^{[2]}^{[3]} is a measure of effect size, describing the strength of association or non-independence between two binary data values. It is used as a descriptive statistic, and plays an important role in logistic regression.

## References Edit

- ↑ Cornfield, J. "A method of estimating comparative rates from clinical data. Applications to cancer of the lung, breast, and cervix".
*Journal of the National Cancer Institute***11**: 1269–1275. - ↑ Mosteller, Frederick (1968). "Association and Estimation in Contingency Tables".
*Journal of the American Statistical Association***63**(321): 1–28. http://www.jstor.org/stable/2283825. - ↑ Edwards, A.W.F. (1963). "The measure of association in a 2x2 table".
*Journal of the Royal Statistical Society, Series A***126**(1): 109–114. http://www.jstor.org/stable/2982448.

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