Subset selection based on order statistics from logistic populations

Mark J. van der Laan, P. Laan, van der

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    Abstract

    Consider k equal size treatment groups and let the outcome of interest be a survival time. Suppose that a known monotone transformation of the survival times is logistically distributed and that the treatment only affects the location parameter. We obtain exact results for the problem of selecting a subset of treatments, based on the i-th ordered survival times, which contains with specified probability P* the optimal treatment. Since the distribution of the median of a small logistic i.i.d. sample is shown to approximate very well the normal distribution our exact results for the median can also be used for subset selection based on estimates of location parameters which are normally or approximately normally distributed.
    Original languageEnglish
    Pages (from-to)237-245
    JournalStatistics
    Volume34
    Issue number3
    DOIs
    Publication statusPublished - 2000

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