6533b7d2fe1ef96bd125e9a7

RESEARCH PRODUCT

A Modification of Stone's Test for Trend for Binary Outcome

Eric Enders-kleeFrank Krummenauer

subject

Statistics and ProbabilityEstimatorRegression analysisGeneral MedicinePoisson distributionBinomial distributionsymbols.namesakeStatisticssymbolsTest statisticEconometricsCochran–Armitage test for trendp-valueStatistics Probability and UncertaintyRare disease assumptionMathematics

description

STONE (1988) suggested the first isotonic regression estimator as a tool for drawing inferences on possibly increased cancer case counts among several subregions around a putative source. He assumed the case counts to be Poisson distributed and therefore introduced a rare disease assumption into his approach. However, when analyzing cross sectional data one would rather refer to prevalence estimates among these subregions around a point risk source (for example the origin of chemical fallout). Therefore we applied antitonic regression estimation in Binomial distributions to derive a test statistic and a p value to test for a possible trend in the observed prevalence data around the putative source. The computation of this p value will be illustrated as well as severe difficulties concerning its interpretation. Further the Maximum Likelihood Ratio approach will be used to derive an alternative test statistic.

https://doi.org/10.1002/(sici)1521-4036(199808)40:4<403::aid-bimj403>3.0.co;2-z