-
作者:BIRNBAUM, ZW
摘要:Tables for the Kolmogorov-Smirnov test for goodness of fit given previously by Massey, one of whose papers was reviewed in these abstracts (35632), have been recomputed and expanded. The tables may be used to compute confidence intervals for the true distribution and to estimate sample sizes required for confidence intervals of prespecified width. It is shown that for N > 80, the asymptotic approximation is good enough for practical purposes. The Kolmogorov-Smirnov method is compared with othe...
-
作者:BERKSON, J; GAGE, RP
摘要:A two parameter function for fitting actuarial survival curves from cancer patients is derived from theoretical considerations. The function is fitted to two sets of data, one from patients with breast cancer and one from patients with stomach cancer. Each set is subdivided according to the presence or absence of metastasis. The fits obtained are quite good except for certain systematic deviations which are not consistent from one set of data to the next. Life expectations are calculated from ...
-
作者:HALPERIN, M
摘要:A method is given for estimating the mean and variance of a normal distribution truncated on one side. The method applies when the point of truncation is known and when the number of observations falling in the truncated portion is either known or unknown. Charts are given which expedite the calculations necessary for the method which differs somewhat from methods proposed by other writers. Applns. occur in mortality studies where estimates of mean survival times are desired.