Prevalence of hypertension, pre-hypertension and undetected hypertension in Mashhad, Iran

Abstract

Hypertension (HTN) is an important risk factor for cardiovascular disease (CVD) affecting more than a quarter of the world's adult population. The aim of this survey was to determine the prevalence of HTN, pre-HTN, and awareness of HTN in an Iranian population, and to assess the factors associated with HTRN and pre-HTN. The MASHAD study started in 2010 and will continue until 2020. The demographic, anthropometric and lifestyle data were collected by two certified health care professionals and a nurse. SPSS software was used for statistical analysis. There were a total of 9762 participants, of whom 40% were males (n= 3903) and 60% females (n= 5859). The means and SD age of the population samples were 48.8 ±8.4 years for the male and 47.6 ± 8.0 years for the female subgroups. Twelve percent (12%) (0.76-0.82) were classified as prehypertensive, 23% (0.17, 0.23) as hypertensive and 65% were normotensive. Of the group that was hypertensive, 55% were individuals with previously undetected HTN. The prevalence of undetected HTN in the subgroup with diabetes mellitus (DM) was 42%; and in those who were current smoking the prevalence of undetected HTN was 54.9%, indicating a high degree of coclustering of cardiovascular risk factors. In an unselected population from NorthEastern Iran, hypertension was common, often undetected and frequently coexisted with other CVD risk factors.

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