Accuracy of Self-Reported Hypertension, Diabetes, and Hyperlipidemia among Adults of Liwan, Guangzhou, China

Background: we aimed to determine the accuracy of self-reported diabetes, hypertension, and hyperlipidemia in chinese adults and examine factors that affect the accuracy of self-reports.methods: this representative cross-sectional survey was conducted in liwan district, guangzhou city, south-east china. self-reported data were collected using a structured questionnaire. biometrical data were recorded, in-cluding blood lipid, blood glucose and arterial blood pressure levels. sensitivity, specificity, and κ values of self-reports were used as measurements of accuracy or agreements. the robust poisson-gee was applied to determine the association of participants’ characteristics with the accuracy of self-reports. results: self-reported and biometrical data of 1278 residents aged 18 yr and older (693 women and 585 men) were used to calculate three measures of agreement. the agreement between self-reports and biomedical measurements was substantial for both hypertension and diabetes (κ=0.77 and 0.76), but only slight for hyperlipidemia (κ=0.06). similarly, the sensitivity was higher for hypertension and diabetes (72.3% and 71.2%) than for hyperlipidemia (6.8%), while the specificity was high overall (≥98%). the factors associated with an accurate self-reported diagnosis in respondents with disease included having undergone blood pressure measurement (for hypertension) or blood glucose measurement (for diabetes) in the past 6 month, having attended health knowledge lectures in the past year and having social health insurances (for hypertension), and having undergone physical discomfort in the past 2 weeks (for hypertension and diabetes). conclusion: the accuracy of self-reported hypertension and diabetes was high, whereas that of self-reported hyperlipidemia was lower among the population.