Hypertension and pre-hypertension: prevalence, awareness and management among Iranian adults older than 20 years

ABSTRACT

Hypertension [HTN] is an important worldwide challenge. The 7th report of the Joint National Committee [JNC7] provided the last classification of blood pressure levels and introduced the new category of prehypertension. The aim of this study was to estimate the national prevalence of HTN and prehypertension according to the JNC7 guideline and to determine the status of HTN awareness, treatment and control in Iranian adults aged older than 20 years. This cross-sectional study was a part of a nationwide survey on the risk factors for non-communicable diseases, which was conducted in 2004. In 75112 over 20 year old adults, two blood pressure measurements were obtained by a standard method and blood pressure levels were classified according to the JNC7 criteria. Data on patients' awareness, management and treatment of HTN were also collected. The age-adjusted prevalence of HTN and prehypertension was 25.3% and 49.7% in men, and 26% and 38% in women, respectively. Only 35% of hypertensive subjects were aware of their disease, and effective control was observed in 21.4% of them. Considering the high prevalence of HTN and prehypertension and the low awareness and effective control of HTN, our country is facing a serious health problem: