The age adjusted prevalence rate averaged at 23 % among the 12 communities, and the age adjusted prevalence rate of hypertension averaged at 24 % among the 81 communities.

• 12个空气品质研究社区中，高血压年龄标准化盛行率为23%25，而81个饮用水品质研究社区中之高血年龄标准盛行率为24%25。