title: Assessing nonsuperiority, noninferiority, or equivalence when comparing two regression models over a restricted covariate region.
abstract: In many scientific problems the purpose of the comparison of two regression models, which describe the relationship between a same response variable and several same covariates for two different groups, is to demonstrate that one model is no higher than the other by a negligible amount, or to demonstrate that the models have only negligible differences and so they can be regarded as describing practically the same relationship between the response variable and the covariates. In this article, methods based on one-sided pointwise confidence bands are proposed for assessing the nonsuperiority of one model to the other and for assessing the equivalence of two regression models. Examples from QT/QTc study and from drug stability study are used to illustrate the methods.
authors.affiliation: S3 RI and School of Mathematics, University of Southampton, Southampton, UK. W.Liu@maths.soton.ac.uk
authors.forename: W
authors.initials: W
authors.lastname: Liu
authors.forename: F
authors.initials: F
authors.lastname: Bretz
authors.forename: A J
authors.initials: AJ
authors.lastname: Hayter
authors.forename: H P
authors.initials: HP
authors.lastname: Wynn
mesh_terms: D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use; D001145:Arrhythmias, Cardiac / Q000188:drug therapy / Q000503:physiopathology; D001699:Biometry / Q000379:methods*; D018849:Controlled Clinical Trials as Topic / Q000706:statistics & numerical data; D004355:Drug Stability; D004562:Electrocardiography; D006801:Humans; D015233:Models, Statistical; D012044:Regression Analysis
chemical_list: D000889:Anti-Arrhythmia Agents