Health Inequalities Research Program, School of Medicine and Health Sciences, University of Otago, Wellington, Wellington South, Wellington, New Zealand.
Stroke. 2010 Nov;41(11):2678-80. doi: 10.1161/STROKEAHA.110.598268. Epub 2010 Oct 14.
There is mixed evidence concerning the validity of self-reported history of stroke in population-based studies. We aimed to examine the validity of self-reported stroke using hospitalization with a primary diagnosis of stroke as the reference group.
Self-reported history of stroke was taken from the Survey of Families, Income, and Employment (N=18 950; 2004-2005) and defined as a respondent answering yes to the question, "Have you ever been told by a doctor that you have had a stroke?". Survey of Families, Income, and Employment respondents consented to link their data to the New Zealand Health Information Service records of publically funded hospitalizations between 1990 and 2006. We calculated positive predictive value, sensitivity, and specificity of self-reported stroke against hospitalization for stroke.
Approximately 2% of the adult Survey of Families, Income, and Employment population reported they had been told by a doctor that they had a stroke. Only 1% had evidence of hospitalization for stroke since 1990. The sensitivity of self-reported stroke was 73% and specificity was 98%. However, the positive predictive value, people who reported having a stroke with confirmation of hospitalization for stroke, was low at 29%.
The use of self-reported stroke will most likely overestimate the prevalence of stroke. A combination of methods is required to determine prevalence in population-based studies.
人群研究中，关于自我报告的中风病史的有效性存在混杂证据。我们旨在通过以因中风住院的患者作为参照组，来检验自我报告中风病史的有效性。
中风的自我报告病史来自家庭、收入和就业调查（Survey of Families, Income, and Employment，N=18950；2004-2005 年），并定义为回答“医生是否曾告诉您患有中风？”问题的受访者。家庭、收入和就业调查的受访者同意将其数据与新西兰健康信息服务的记录相链接，该记录涵盖了 1990 年至 2006 年公共资助住院治疗的情况。我们计算了自我报告中风病史与因中风住院的阳性预测值、敏感性和特异性。
约 2%的家庭、收入和就业调查成年人群报告曾被医生告知患有中风。自 1990 年以来，仅有 1%的人有因中风住院的证据。自我报告中风的敏感性为 73%，特异性为 98%。然而，阳性预测值，即报告有中风且经证实因中风住院的患者比例较低，仅为 29%。
自我报告中风病史的方法可能会高估中风的患病率。在人群研究中，需要结合多种方法来确定患病率。
