Prevalence of Hypertension in 9-to 10-Year-Old Icelandic School Children

Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland.
Journal of Clinical Hypertension (Impact Factor: 2.85). 10/2011; 13(10):774-9. DOI: 10.1111/j.1751-7176.2011.00496.x
Source: PubMed


J Clin Hypertens (Greenwich). 2011;13:774–779. ©2011 Wiley Periodicals, Inc.
The purpose of the study was to investigate blood pressure (BP) distribution, prevalence of hypertension, and correlation between BP and body mass index (BMI) in 9- to 10-year-old Icelandic children. Two manual and two automated BP measurements were performed in 1071 Icelandic children. Children with elevated BP underwent a second BP screening, and a third screening was performed if the BP was elevated at the second visit. Hypertension was defined as BP ≥95th percentile at all three visits. White-coat hypertension was diagnosed in hypertensive children with normal 24-hour ambulatory BP. Of 970 children with complete data, 489 were girls (50.4%). The mean BP was 111/63 mm Hg in girls and 112/64 mm Hg in boys (P<.001). The prevalence of elevated BP was 13.1%, 6.0%, and 3.1% after the first, second, and third screen, respectively. The prevalence of sustained hypertension was 2.5% and an additional 0.6% had white-coat hypertension. A significant correlation between BMI and BP was observed (r=0.338, P<.001) and 8.6% of the obese children had hypertension. The prevalence of hypertension in 9- to 10-year-old Icelandic children is lower than indicated in recent reports and is associated with obesity.

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Available from: Vidar Edvardsson, Jun 21, 2015
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    • "Nine to ten year old students (970) in the greater Reykjavic in Iceland were recruited for a study to investigate the prevalence of hypertension. At the initial screening, 13.1% had blood pressure in the hypertensive range, 6% after the second and 3.1% following the third screening [43]. A survey with Schoolchildren (3,394 African American and 11,292 white students) aged 10–15 years in St. Paul and Minneapolis found a hypertension prevalence of 2.7% (systolic) and 2% (diastolic). "
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