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http://dx.doi.org/10.5351/KJAS.2008.21.6.947

Non-Inferiority Test in a Two-Arm Trial and a Three-Arm Trial Including a Placebo  

Lee, Ji-Sun (Dept. of Biostatistics, Catholic University)
Kim, Dong-Jae (Dept. of Biostatistics, Catholic University)
Publication Information
The Korean Journal of Applied Statistics / v.21, no.6, 2008 , pp. 947-957 More about this Journal
Abstract
Two-arm non-inferiority trials is often applied to parametric procedure suggested by Hauschke et al. (1999). Since this design does not allow a direct comparison of a new treatment group with placebo group, parametric procedure in a three-arm non-inferiority trial with a placebo group was suggested by Pigeot et al. (2003). But, procedures in these designs are necessary for distribution assumptions. Therefore we propose, in this paper, non parametric procedures employing Wilcoxon rank sum test in a two-arm design and linear contrast test suggested by Scheirer et al. (1976) in a three-arm design. The proposed nonparametric procedures and parametric procedures are compared by Monte Carlo simulation study.
Keywords
Non-inferiority; nonparametric; hypothesis testing;
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  • Reference
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