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儿童癌症研究中用于对照选择的随机数字拨号:匹配组内的地理接近度和人口统计学特征

Random-digit dialing for control selection in childhood cancer studies: the geographic proximity and demographics within matched sets.

作者信息

Sakkinen P A, Severson R K, Ross J A, Robison L L

机构信息

Division of Epidemiology and Pediatric Oncology, University of Minnesota, Minneapolis, USA.

出版信息

Am J Public Health. 1995 Apr;85(4):555-7. doi: 10.2105/ajph.85.4.555.

Abstract

The purpose of this analysis was to evaluate the degree of matching in 95 individually matched pairs from a case-control study of childhood leukemia that used random-digit dialing to select control subjects. Both geographic proximity (of each case subject to his or her matched control subject) and differences in socioeconomic status were evaluated. The median distance between matched pairs was 3.2 km. There were no significant differences in distance between matched pairs by urban/rural status and geographic location. For studies of childhood cancer drawn from pediatric referral centers, random-digit dialing appears to provide a suitable control group.

摘要

本分析的目的是评估一项儿童白血病病例对照研究中95个个体匹配对的匹配程度,该研究采用随机数字拨号法选择对照对象。评估了(每个病例对象与其匹配的对照对象之间的)地理距离和社会经济地位差异。匹配对之间的中位距离为3.2公里。按城乡状况和地理位置划分,匹配对之间的距离无显著差异。对于来自儿科转诊中心的儿童癌症研究,随机数字拨号似乎能提供合适的对照组。

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