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Biometrics. 1987 Dec;43(4):941-50.

Asymptotic confidence intervals for the difference between two binomial parameters for use with small samples.

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  • 1Department of Laboratory Medicine, University of California, San Francisco 94143.


Some asymptotically-based confidence intervals for the difference between the binomial parameters from two binomial populations are described. Five of these, including the usual simple interval, are extensively evaluated in terms of actual confidence level and interval length. A new simple interval behaves much better than the usual interval, as do some recently proposed iteratively computed intervals.

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