作者:WHITTEMORE, AS; FRIEND, N; BROWN, BW; HOLLY, EA
摘要:A test is given to detect clustering in disease incidence or mortality data. The test statistic is the mean distance between all pairs of disease cases. Its null mean and variance and its asymptotic normality are derived under assumptions that accommodate differences in population distribution among demographic subgroups at different disease risk. The test is illustrated on 63 cases of anal and rectal squamous cell carcinoma in San Francisco during 1973-1981.
作者:FEDERER, WT; RAGHAVARAO, D
作者单位:Pennsylvania Commonwealth System of Higher Education (PCSHE); Temple University
摘要:Suppose that n of m cultivars are grown together in a mixture such as that found in intercropping investigations. Response model equations for n = 2 are formulated in a manner akin to that found for a diallel crossing experiment in genetics. This situation varies considerably from diallel crossing in that n .gtoreq. 2 and yields may or may not be available for each member of the mixture. Response model equations are formulated and then minimal treatment designs obtained to derive least-squares...
作者:SILVERMAN, BW; YOUNG, GA
作者单位:University of Cambridge