This paper studies a compound interval hypothesis about risk ratio in an incomplete correlated <InlineEquation ID="IEq3"> <EquationSource Format="TEX">$$2\times 2$$</EquationSource> </InlineEquation> table. Asymptotic test statistics of the Wald-type and the logarithmic transformation are proposed, with methods of the sample estimation and the constrained maximum likelihood...</equationsource></inlineequation>