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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：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：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：BUHRMAN, JM
摘要：Fisher''s (1925) test can deal with the hypothesis of equal probabilities of success of 2 experiments, A and B. The test requires a fixed number of experiments of both kinds. If the experimental design is changed into randomizing the numbers of experiments A and B, other kinds of hypotheses can be tested exactly and exact confidence intervals can be constructed.
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作者：WAHRENBERGER, DL; ANTLE, CE; KLIMKO, LA
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park
摘要：Fox suggested and evaluated several non-Bayesian rules for the problem of the 2-armed bandit. Several Bayesian rules for this problem are compared with the best of Fox''s rules. If a reasonably appropriate prior is used, Bayesian rules are better than Fox''s rule. Bayesian rules are quite robust with regard to the choice of a prior. [This method has application to corresponding medical experiments.].
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作者：FAREWELL, VT
作者单位：Imperial College London; University of London
摘要：A binary variable can specify the incidence of a particular disease, Y = 1 or a lifetime free of the disease, Y = 0. In a study, some subjects have Y = 1 recorded at specified ages. For other subjects, with Y unknown due to incomplete follow-up, the observed follow-up time compared with the usual incidence pattern for the disease gives some information on the possibility that Y = 0. A model for this situation is proposed which combines a logistic relationship for the probability of incidence a...
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作者：STRAUSS, D
作者单位：University of California System; University of California Riverside
摘要：If balls are dropped randomly and independently into a number of cells arranged on a line, or on a circle, the occupied cells will form into unconnected runs. The number r of runs could be used as a test statistic for aggregation. In this note the distribution of r is derived and its asymptotic normality established.
