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Validation of a stroke symptom questionnaire for epidemiological surveys

机译：流行病学调查中风症状问卷的验证

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CONTEXT AND OBJECTIVE: Stroke is a relevant issue within public health and requires epidemiological surveillance tools. The aim here was to validate a questionnaire for evaluating individuals with stroke symptoms in the Stroke Morbidity and Mortality Study (Estudo de Mortalidade e Morbidade do Acidente Vascular Cerebral, EMMA), S?o Paulo, Brazil. DESIGN AND SETTING: This was a cross-sectional study performed among a sample of the inhabitants of Butant?, an area in the western zone of the city of S?o Paulo. METHODS: For all households in the coverage area of a primary healthcare unit, household members over the age of 35 years answered a stroke symptom questionnaire addressing limb weakness, facial weakness, speech problems, sensory disorders and impaired vision. Thirty-six participants were randomly selected for a complete neurological examination (gold standard). RESULTS: Considering all the questions in the questionnaire, the sensitivity was 72.2%, specificity was 94.4%, positive predictive value was 92.9% and negative predictive value was 77.3%. The positive likelihood ratio was 12.9, the negative likelihood ratio was 0.29 and the kappa coefficient was 0.67. Limb weakness was the most sensitive symptom, and speech problems were the most specific. CONCLUSIONS: The stroke symptom questionnaire is a useful tool and can be applied by trained interviewers with the aim of identifying community-dwelling stroke patients, through the structure of the Family Health Program.
机译：背景与目的：中风是公共卫生中的一个相关问题，需要流行病学监测工具。目的是在巴西圣保罗市的中风发病率和死亡率研究（Estudo de Mortalidade e Morbidade do Acidente do Acidente血管性脑病，EMMA）中验证用于评估中风症状患者的问卷。设计与环境：这是对Butant？居民的样本进行的横断面研究，Butant？是圣保罗市西部地区。方法：对于基层医疗机构覆盖范围内的所有家庭，年龄在35岁以上的家庭成员都回答了中风症状调查表，内容涉及四肢无力，面部无力，言语问题，感觉障碍和视力障碍。随机选择36名参与者进行完整的神经系统检查（金标准）。结果：考虑到问卷中的所有问题，敏感性为72.2％，特异性为94.4％，阳性预测值为92.9％，阴性预测值为77.3％。正似然比是12.9，负似然比是0.29，kappa系数是0.67。肢体无力是最敏感的症状，言语问题是最具体的。结论：中风症状问卷是一种有用的工具，可以由受过训练的访调员使用，目的是通过家庭健康计划的结构来识别社区居民中风患者。

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