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The high prevalence of hypertension in rural-dwelling Tanzanian older adults and the disparity between detection, treatment and control: a rule of sixths?

Lookup NU author(s): Dr Matthew Dewhurst, Dr Felicity Dewhurst, Professor Richard Walker

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Abstract

There are limited, reliable data on the prevalence of hypertension in East African populations. The aim of this study was to document the prevalence of hypertension in the rural Hai district of Tanzania. All consenting individuals aged 70 years and over who were living in 12 randomly-selected villages in the district underwent three consecutive sitting blood pressure (BP) measurements. An average of the last two measurements was taken. Prior diagnosis of, and treatment for, hypertension was recorded. Of the 2223 subjects, 1553 (69.9%, 95% CI 68.0-71.8) had hypertension (BP >= 140/90). Of those with hypertension 733 (47.2%) had isolated systolic hypertension. Only 586 (37.7%) hypertensives had been previously diagnosed, 94 (6.1%) were currently treated and 14 (0.9%) were adequately controlled. This is the first large-scale prevalence study of hypertension in the elderly in sub-Saharan Africa (SSA). Our results approximate to a 'rule of sixths'; 2/6 of hypertensives were previously detected, 1/6 of those previously detected were on treatment and 1/6 of those on treatment were adequately controlled. Hypertension is a large problem in the elderly population in SSA, and there are a growing number of elderly who are at risk of hypertensive sequelae owing to lack of detection and treatment.


Publication metadata

Author(s): Dewhurst MJ, Dewhurst F, Gray WK, Chaote P, Orega GP, Walker RW

Publication type: Article

Publication status: Published

Journal: Journal of Human Hypertension

Year: 2013

Volume: 27

Issue: 6

Pages: 374-380

Print publication date: 01/06/2013

ISSN (print): 0950-9240

ISSN (electronic): 1476-5527

Publisher: Nature Publishing Group

URL: http://dx.doi.org/10.1038/jhh.2012.59

DOI: 10.1038/jhh.2012.59


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