Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

I have seen several variants of exact tests for differences and ratios of binomial parameters. How do they differ?

April 26, 2017binomial differ differences exact parameters ratios seen tests variants

0

Posted

I have seen several variants of exact tests for differences and ratios of binomial parameters. How do they differ?

1 Answer

0

Posted

A. An early variant was based on inverting a test based on a very inefficient statistic due to Santner and Snell (1980). More recently, StatXact has introduced (1) Exact confidence intervals for differences and ratios of binomial parameters based on inverting the exact 1-sided score-test (Due to Chan and Zhang, 1999), and (2) Exact confidence intervals for differences and ratios of binomial parameters based on inverting the exact 2-sided score-test (due to Agresti and Min, 2001). This test is more efficient than the Chan and Zhang test because it reduces discreteness by being 2-sided.