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首页> 外文期刊>Preventive Medicine: An International Journal Devoted to Practice and Theory >Systematic differences in validity of self-reported mammography behavior: A problem for intergroup comparisons?
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Systematic differences in validity of self-reported mammography behavior: A problem for intergroup comparisons?

机译：自我报告的乳腺摄影行为有效性的系统差异：组间比较的问题吗？

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BACKGROUND: Prior studies of recall accuracy for screening mammogram behavior have examined relatively homogeneous groups. Data are limited on possible systematic group differences, so we evaluated women's recall accuracy in two separate care systems in one city. Methods. Women 50 to 70 years old with and without screening mammograms 10 to 14 months prior were identified from fiscal, clinic, and radiology records at a military care system (MCS) and a county-funded system (CFS) for indigents. Mammogram status was verified through radiology records. Women were excluded if mammograms were diagnostic, done for other than annual screening, or had abnormal results. Interviewers blinded to mammogram status surveyed randomly selected eligible women. RESULTS: For 62 screened/31 unscreened MCS women and 78 screened/61 unscreened CFS women, specificity was similar, at 65 and 62%, respectively. In contrast, sensitivity varied significantly: 95% versus 79% (P = 0. 011). Primary ethonocultural groups were Euro-American (MCS-60%) and Mexican American (CFS-85%). Although not different in specificity of recall (67% versus 61%), these major subgroups significantly differed in sensitivity (97% versus 80%, P = 0.017), proportion of true negatives due to never having a mammogram (35% versus 57%, P = 0.003), and proportion with >/=high school education (78% versus 19%, P < 0.00001). CONCLUSION: Systematic differences in recall validity may exist and compromise the accuracy of intergroup comparisons. Copyright 1999 American Health Foundation and Academic Press.
机译：背景：对筛查乳房X光照片行为的召回准确性的先前研究已经检查了相对均质的组。有关可能的系统性群体差异的数据有限，因此我们在一个城市的两个单独的护理系统中评估了妇女的召回准确性。方法。从军事护理系统（MCS）和县资助系统（CFS）的贫困人口的财政，诊所和放射学记录中识别出50至70岁的10到14个月之前没有进行乳房X线检查的妇女。乳房X光检查的状态已通过放射学记录进行了验证。如果乳房X线照片可以诊断，进行年度检查以外的其他检查或结果异常，则排除女性。采访者对乳房X光检查的状态视而不见，对随机选择的合格女性进行了调查。结果：对于62名筛查/ 31名未筛查的MCS妇女和78名筛查/ 61名未筛查的CFS妇女，特异性相似，分别为65％和62％。相比之下，灵敏度差异很大：95％对79％（P = 0. 011）。主要的民族文化群体是欧洲裔美国人（MCS-60％）和墨西哥裔美国人（CFS-85％）。尽管召回的特异性没有差异（67％对61％），但这些主要亚组的敏感性显着不同（97％对80％，P = 0.017），由于从未进行过乳房X光检查的真实阴性比例（35％对57％） ，P = 0.003），以及高中以上学历的比例（78％对19％，P <0.00001）。结论：召回有效性的系统性差异可能会存在，并会损害群体间比较的准确性。版权所有1999美国健康基金会和学术出版社。

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