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过去已有许多报告,在一个相当短的时间和一个有限的地区内发现了若干白血病病例。但这种个别地区还不能认为就是白血病的地区和时间聚集的证据,因为它可能是白血病分布不均匀的结果,也可能是主观选择地区和时间界限的结果。因此,为了研究白血病发病中的聚集倾向,近年来应用了一些专门的统计学分析方法。本文报告了立陶宛北部7个地区在1963～1970年共计205例白血病和其他造血组织增生症的统计学分析的结果。该地区年平均农村人口为24.1万,面积约1万平方公里。统计学的分析是根据在许多病例中可能成对的病例来判断地区和时间的间隔。作者的统计学分析证明,白血病和其他造血组织
There have been many reports in the past that several leukemia cases were found in a fairly short period of time and in a limited area. However, this individual area can not yet be considered as evidence of leukemia in areas and time gathering, because it may be the result of uneven distribution of leukemia, it may be the result of the subjective choice of regions and time boundaries. Therefore, in order to study the aggregation tendency in the development of leukemia, some special statistical analysis methods have been applied in recent years. This paper reports the results of a statistical analysis of a total of 205 leukemias and other hematopoietic tissue hyperplasias in seven regions of northern Lithuania from 1963 to 1970. The average annual rural population of 241,000 in the area covers an area of about 10,000 square kilometers. Statistical analysis is based on the case may be paired in many cases to determine the region and the time interval. Authors’ statistical analyzes demonstrate that leukemia and other hematopoietic tissues