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作者：WOOLSON, RF; LACHENBRUCH, PA
摘要：Rank tests are proposed and studied for the hypothesis of equal treatment effects in randomized block experiments. The procedures are applicable to samples containing arbitrarily right-censored observations as well as uncensored observations. In the case of logistic and double exponential rank scores, the tests are shown to be censored data extensions of the well-known Friedman (1937) and Brown and Mood (1951) procedures, respectively. The application of the techniques to problems in survival ...
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作者：KOCHAR, SC
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作者：HALL, P
摘要：The nonparametric estimators introduced by Hills (1967) and Aitchison and Aitken (1976) were viewed as weighted near neighbor estimators. An adaptive weighted near neighbor estimator is constructed which minimizes mean squared error. Its properties were examined. The estimator is easy to compute. [A diagnositc situation was considered in which the presence of a disease D is determined by looking for k different symptoms in the patient].
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作者：KOKOLAKIS, GE
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作者：PRENTICE, RL; WILLIAMS, BJ; PETERSON, AV
作者单位：Gonzaga University
摘要：Analysis of regression effects when individual study subjects may experience multiple failures [i.e., time sequence of asthmatic attacks, epileptic seizures, infection episodes, tumor diagnoses, tumor recurrences or bleeding incidents in individual patients] was undertaken. The proposed methods are useful when there are a large number of study subjects. Two general classes of regression models are considered in order to relate the hazard or intensity function to covariates and to preceding fai...
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作者：SANDLAND, RL; KIRKWOOD, GP
作者单位：Commonwealth Scientific & Industrial Research Organisation (CSIRO)
摘要：A simply parameterized class of models for the estimation of survival probability in a marked population is introduced which allows tests of dependence between sighting probabilities and constancy of survival or sighting probabilities. Estimation and hypothesis testing based on the likelihood function are discussed. By simulation, the asymptotic properties of the test for dependence are shown to hold for modest sample sizes. The degree of bias in estimation of survival probabilities when depen...
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作者：MAK, TK; NG, KW
摘要：A linear-model approach is proposed for deriving the maximum likelihood estimates of the mother-sib interclass correlation and other parameters from familial data when the families have unequal numbers of offspring. It leads to an algorithm which involves the maximization of an explicit function of a variable for estimating 1 parameter and direct substitutions for other parameters. The algorighm is simpler and more practical than that proposed by Rosner (1979). Some other advantages of the lin...
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作者：KEDEM, B; SLUD, E
摘要：A relation between the graphical appearance of a stationary time series and its autocorrelations is discussed. The use of counts of visual features termed higher order crossings is proposed in testing goodness of fit of hypothesized models against very general alternatives. Attention is focused on a specific example of a new type of nonparametric test statistic arising from iterative feature extraction procedures called extractors. The statistic is compared with Box and Pierce''s portmanteau Q...
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作者：GOUDIE, IBJ; GOLDIE, CM
作者单位：University of Sussex
摘要：Consider a linear pure death process in which the common death rate and the initial size n of the population are both unknown. An estimate of n is required, based on the observed times of the 1st j deaths, i.e., with censored sampling. The only reliable nonBayesian method is to use interval estimates, for all the standard point estimation techniques are liable to fail. Appropriate interval estimators are derived and discussed. The corresponding truncated sampling model is considered.
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作者：HAYRE, LS; TURNBULL, BW
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Temple University; Cornell University
摘要：Asymptotically optimal sequential procedures are developed for point and interval estimation of the difference and ratio of the means of 2 experimental populations. This is done in a clinical trial setting in which the responses are exponentially distributed survival times and are subject to censoring. The usual situation in which observations are immediate is treated as a special case. Some simulation results are given for moderate sample sizes [i.e., patients, treatments and death].
