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Exploring determinants of secular decreases in childhood blood pressure and hypertension

Young-Ho Khang1, John W Lynch

  • 1Department of Preventive Medicine, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil Songpa-Gu, Seoul, Korea. youngk@amc.seoul.kr

Circulation
|July 7, 2011
PubMed

Insights

Childhood blood pressure significantly declined in Korean adolescents over a decade, with hypertension prevalence dropping substantially. The exact reasons for these population-level blood pressure trends in youth remain unclear.

Area of Science:

  • Pediatrics
  • Cardiovascular Health
  • Public Health

Background:

  • Childhood blood pressure is not significantly impacted by medical interventions or lifestyle changes post-diagnosis.
  • Understanding population-level factors influencing blood pressure and hypertension in children is crucial.

Purpose of the Study:

  • To examine secular trends in childhood blood pressure and hypertension prevalence in Korea.
  • To identify potential contributing factors to observed changes in adolescent blood pressure.

Main Methods:

  • Analysis of data from 4 waves of the Korean National Health and Nutrition Examination Survey (1998-2008).
  • Inclusion of 5909 boys and girls aged 10 to 19 years.
  • Age- and height-adjusted statistical analysis of blood pressure and hypertension prevalence.

Main Results:

  • Mean systolic blood pressure decreased significantly in both boys (8.7 mm Hg) and girls (10.0 mm Hg) over 10 years.
  • Prevalence of childhood hypertension and prehypertension/hypertension decreased by 52% to 86%.
  • These declines occurred across all age, socioeconomic groups, and were not linked to changes in obesity, health behaviors, nutrition, or sociodemographic factors.

Conclusions:

  • Significant population-level decreases in blood pressure were observed in Korean children and adolescents (10-19 years) over a decade.
  • The underlying causes for these observed secular trends in blood pressure require further investigation.
Abstract

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