Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleA Comparison of the Cost-efficiencies of the Sequential, Group-sequential, and Variable-sample-size-sequential Probability Ratio Tests.AuthorsMorgan, Peter B.; Cressie, NoelPublicationScandinavian Journal of Statistics, 1997, Vol 24, Issue 2, p181ISSN0303-6898Publication typeArticleDOI10.1111/1467-9469.00057