The effect of sample design on the comparison of associations
抽样设计对关联比较的影响
A family of measures of association designed to compare the inherent association in two r×c contingency tables was proposed by Altham (1970). Under simple random sampling the measures are asymptotically distributed as noncentral chi-squared random variables. In this paper we show that under complex sampling this distribution changes to a mixture and that ignoring the design may lead to misleading results. We derive measures of the misestimation and measures of association…