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作者：ROGER, JH
作者单位：University of Reading
摘要：A significance test for cyclic trends in incidence data of epidemiological investigations is derived from the efficient score vector. The behavior of this test for small samples is superior to that of previous methods used.
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作者：SIMON, G
作者单位：State University of New York (SUNY) System; Stony Brook University
摘要：For a K-dimensional data set, compute all the 1/2K(K-1) Kendall''s taus and in addition compute multivariate generalizations of tau. Under the hypothesis of total independence in K dimensions, the computed quantities can be shown to have asymptotic normal distributions, thereby permitting a test of the total independence hypothesis. Significant taus will provide information about nonindependence.
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作者：TARONE, RE; WARE, J
作者单位：National Institutes of Health (NIH) - USA; NIH National Cancer Institute (NCI)
摘要：Two statistics for testing the equality of survival distributions in the presence of arbitrary right censorship, the log rank test statistic and the modified Wilcoxon test statistic, differ only in the choice of weights which are functions of the number of individuals at risk at the time of each death. A related statistic is proposed which may be more powerful across a range of alternatives than are the log rank statistic and the modified Wilcoxon statistic.
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作者：MACNEILL, IB
作者单位：Western University (University of Western Ontario)
摘要：Tests were discussed for detecting the presence of common periodicities in the components of a multiple time series. Distributional results were obtained for the case of white noise, independent, normal series. These were extended, first to the case of normal linear series with specified spectra and then to the case of estimated spectra. These results were then discussed in the context of correlated series. The tests were applied to several sets of data.
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作者：BROOKS, RJ
作者单位：University of London; University College London
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作者：KNOKE, JD
作者单位：University System of Ohio; Case Western Reserve University
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作者：WYNN, HP
作者单位：Imperial College London; University of London
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作者：MENDOZA, G; IGLEWICZ, B
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Temple University
摘要：The sequential version of Colton''s decision-theoretic model for comparing 2 medical treatments was modified by considering both the patients who are in the experiment and also the patients who do not participate in the experiment, while the experiment is in progress. The consideration of the patients who do not participate in the experiment leads to major changes in the results. Both the minimax and Bayesian solutions are obtained and are compared with Colton''s equivalent results.
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作者：DIGGLE, PJ
作者单位：Newcastle University - UK
摘要：The author''s earlier analytical results on the robustness of distance-based estimators of density are supplemented by a simulation study, with particular attention being given to various types of aggregated spatial point patterns. Remarks on heterogeneous patterns are made. Finally, the results of an application to data on tree locations are described.
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作者：POCOCK, SJ
作者单位：University of Edinburgh
摘要：In clinical trials with sequential patient entry, fixed sample size designs are unjustified on ethical grounds and sequential designs are often impracticable. One solution is a group sequential design dividing patient entry into a number of equal-sized groups so that the decision to stop the trial or continue is based on repeated significance tests of the accumulated data after each group is evaluated. Exact results are obtained for a trial with 2 treatments and a normal response with known va...
