作者：MARSHALL, AW; GOLDHAMER, H
摘要：In epidemiological studies of disease, both the incidence measure (proportion of a population affected for the first time in a given period) and the prevalence measure (proportion of a population affected at a given time) are important. Methods for estimating these rates usually require expensive and time-consuming field investigations limited to small segments of the population. Furthermore, age-specific measures are frequently based on hospital records which give age-at-admission rather than...
作者：BERKSON, J
摘要：It is well known that both types of estimates are efficient and best asymptotically normal for the theory of large samples. This paper presents a sampling investigation of the bias and variance of these estimates in small samples, the only real statistical samples. The results indicate that the minimum chi-square (MC) estimate has a uniformly lower variance than the maximum likelihood estimate, although the bias of the former is usually somewhat larger. The biases, however, are small and for a...
作者：HALPERIN, M; GREENHOUSE, SW; CORNFIELD, J; ZALOKAR, J
摘要：Tables of upper and lower limits on the upper 5 per cent and 1 per cent points of the distribution are presented. The method of com-putation and the reliability of the tables are described, and approximations which may be used to supplement the tables are derived and discussed. Examples of the use of the tables are given with special attention devoted to their use for multiple significance testing on a set of means.
