Abstract 005: Prevalence, Awareness, Treatment, and Control of Hypertension in China: The China Metabolic Risk Factor Study
Objective: Hypertension is the leading preventable risk factor for premature death in the world. We estimated the prevalence and distribution of hypertension and determined the status of hypertension awareness, treatment, and control in the general population in China.
Methods: We conducted a cross-sectional survey in a nationally representative sample of 98,658 Chinese adults aged ≥18 years in 2010. Three blood pressure (BP) measurements were obtained by trained observers using a calibrated automatic electronic device (OMRON Model HEM-7071) after a 5-minute sitting rest. Information on history of hypertension and use of antihypertensive medications was obtained by use of a standard questionnaire. Hypertension was defined as a mean systolic BP ≥140 mm Hg and/or diastolic BP ≥90 mm Hg and/or use of antihypertensive medications. Prevalence of hypertension was calculated by weighting sampling factors derived from China population census data in 2010 to obtain national estimates.
Results: An estimated total of 33.7 percent of the Chinese adult population aged ≥18 years (35.3% in men and 32.1% in women) representing 336.5 million persons (179.0 million men and 157.5 million women) had hypertension. The age-specific prevalence of hypertension was 15.0%, 26.3%, 36.5%, 49.2%, 61.6%, and 70.2% in men, and 7.6%, 15.8%, 31.6%, 51.2%, 66.0%, and 73.8% in women, for ages 18-29, 30-39, 40-49, 50-59, 60-69, ≥70 years, respectively. The prevalence of hypertension was 34.8% in urban versus 33.2% in rural residents. Overall, only 33.3% of those with hypertension were aware of their diagnosis, only 24.0% were taking prescribed medication to lower their BP, and only 3.9% achieved BP control (<140/90 mm Hg). The percentage who were aware, treated, and controlled was 30.4%, 20.6%, and 3.5%, respectively in men, 36.6%, 27.8%, and 4.3% in women, 38.4%, 29.2%, and 6.5% in urban, and 30.9%, 21.5%, and 2.6% in rural residents.
Conclusion: The prevalence of hypertension in China has increased dramatically during the past decade. More worrisome, the percentage of those with hypertension who are aware, treated, and controlled is unacceptably low. Our results underscore the urgent need to develop national strategies to improve prevention, detection, and treatment of hypertension in China.
- © 2013 by American Heart Association, Inc.