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PubMed · 6518248

Exact confidence intervals following a group sequential test.

A A Tsiatis·G L Rosner·C R Mehta
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Abstract

A numerical method is used to compute confidence intervals, which have exact coverage probabilities, for the mean of a normal distribution following a group sequential test. This method, which uses an ordering of the sample space similar to that employed by Siegmund (1978, Biometrika 65, 341-349), is contrasted with the usual confidence interval for the mean.

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A A Tsiatis, G L Rosner, C R Mehta. 1984. Exact confidence intervals following a group sequential test.. https://pubmed.ncbi.nlm.nih.gov/6518248/

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