Weinstock M A, Colditz G A, Willett W C, Stampfer M J, Rosner B, Speizer F E
Department of Medicine, Dermatology Section, Veterans Affairs Medical Center, Providence, RI 02908.
Am J Epidemiol. 1991 Feb 1;133(3):240-5. doi: 10.1093/oxfordjournals.aje.a115868.
In a case-control study nested in the Nurses' Health Study cohort, the authors assessed recall bias in the ascertainment of two risk factors for melanoma: hair color and ability to tan. Participants reported on these risk factors in a 1982 questionnaire and in a subsequent case-control questionnaire or telephone interview. The test-retest reliability among controls was high for both questions (Spearman's r = 0.76). Among women diagnosed with melanoma after the first questionnaire and before the second, there was a substantial shift toward reporting a reduced ability to tan when participants were questioned after the diagnosis of melanoma (p = 0.035). No shift was noted for the hair color question (p = 0.8). The authors conclude that recall bias was observed among female nurses with cutaneous melanoma in the assessment of tanning ability, a major risk factor for melanoma.
在一项嵌套于护士健康研究队列中的病例对照研究中，作者评估了在确定黑色素瘤的两个风险因素（头发颜色和晒黑能力）时的回忆偏倚。参与者在1982年的问卷以及随后的病例对照问卷或电话访谈中报告了这些风险因素。两个问题在对照组中的重测信度都很高（斯皮尔曼相关系数r = 0.76）。在第一次问卷之后且第二次问卷之前被诊断为黑色素瘤的女性中，当参与者在黑色素瘤诊断后接受询问时，报告晒黑能力下降的情况有显著变化（p = 0.035）。头发颜色问题未发现变化（p = 0.8）。作者得出结论，在评估晒黑能力（黑色素瘤的一个主要风险因素）时，观察到患有皮肤黑色素瘤的女性护士存在回忆偏倚。
