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Confidence Intervals for a Normal Mean Following a Group Sequential Test

1989; Oxford University Press; Volume: 45; Issue: 1 Linguagem: Inglês

10.2307/2532050

1541-0420

M N Chang,

Statistical Methods and Bayesian Inference

This paper presents methodology based on the likelihood-ratio test, developed for construction of confidence intervals for a normal mean, following a group sequential test. Examples show that the confidence intervals produced by this method have accurate nominal probability of coverage and have generally shorter average length than that produced by Tsiatis, Rosner, and Mehta (1984, Biometrics 40, 797-803).