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Computing an Exact Confidence Interval for the Common Odds Ratio in Several 2 × 2 Contingency Tables
Cyrus R. Mehta, Nitin R. Patel and Robert Gray
Journal of the American Statistical Association
Vol. 80, No. 392 (Dec., 1985), pp. 969-973
Stable URL: http://www.jstor.org/stable/2288562
Page Count: 5
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A quadratic time network algorithm is provided for computing an exact confidence interval for the common odds ratio in several 2 × 2 independent contingency tables. The algorithm is shown to be a considerable improvement on an existing algorithm developed by Thomas (1975), which relies on exhaustive enumeration. Problems that would formerly have consumed several CPU hours can now be solved in a few CPU seconds. The algorithm can easily handle sparse data sets where asymptotic results are suspect. The network approach, on which the algorithm is based, is also a powerful tool for exact statistical inference in other settings.
Journal of the American Statistical Association © 1985 American Statistical Association