title: An efficient and exact approach for detecting trends with binary endpoints.
abstract: Lloyd (Aust. Nz. J. Stat., 50, 329-345, 2008) developed an exact testing approach to control for nuisance parameters, which was shown to be advantageous in testing for differences between two population proportions. We utilized this approach to obtain unconditional tests for trends in 2 × K contingency tables. We compare the unconditional procedure with other unconditional and conditional approaches based on the well-known Cochran-Armitage test statistic. We give an example to illustrate the approach, and provide a comparison between the methods with regards to type I error and power. The proposed procedure is preferable because it is less conservative and has superior power properties.
authors.affiliation: Department of Biostatistics, University at Buffalo, 3435 Main Street, Buffalo, NY 14214, USA.
authors.forename: Guogen
authors.initials: G
authors.lastname: Shan
authors.forename: Changxing
authors.initials: C
authors.lastname: Ma
authors.forename: Alan D
authors.initials: AD
authors.lastname: Hutson
authors.forename: Gregory E
authors.initials: GE
authors.lastname: Wilding
mesh_terms: D002986:Clinical Trials as Topic / Q000379:methods* / Q000706:statistics & numerical data; D016001:Confidence Intervals; D003627:Data Interpretation, Statistical; D004305:Dose-Response Relationship, Drug; D006801:Humans; D015233:Models, Statistical