title: Estimation of sample size and testing power (Part 3).
abstract: This article introduces the definition and sample size estimation of three special tests (namely, non-inferiority test, equivalence test and superiority test) for qualitative data with the design of one factor with two levels having a binary response variable. Non-inferiority test refers to the research design of which the objective is to verify that the efficacy of the experimental drug is not clinically inferior to that of the positive control drug. Equivalence test refers to the research design of which the objective is to verify that the experimental drug and the control drug have clinically equivalent efficacy. Superiority test refers to the research design of which the objective is to verify that the efficacy of the experimental drug is clinically superior to that of the control drug. By specific examples, this article introduces formulas of sample size estimation for the three special tests, and their SAS realization in detail.
authors.affiliation: Academy of Military Medical Sciences, Beijing, China. lphu812@sina.com
authors.forename: Liang-ping
authors.initials: LP
authors.lastname: Hu
authors.forename: Xiao-lei
authors.initials: XL
authors.lastname: Bao
authors.forename: Xue
authors.initials: X
authors.lastname: Guan
authors.forename: Shi-guo
authors.initials: SG
authors.lastname: Zhou
mesh_terms: D003627:Data Interpretation, Statistical; D015507:Drugs, Investigational; D015233:Models, Statistical; D012107:Research Design; D018401:Sample Size
chemical_list: D015507:Drugs, Investigational