Secular Trends in Blood Pressure Among Japanese Schoolchildren: a Population-based Annual Survey from 1994 to 2010

Overview

Journal J Epidemiol

Specialty Public Health

Date 2012 Aug 7

PMID 22863986

Citations 13

Authors

Takako Shirasawa

Hirotaka Ochiai

Rimei Nishimura

Aya Morimoto

Naoki Shimada

Tadahiro Ohtsu

Hiromi Hoshino

Naoko Tajima

Akatsuki Kokaze

Affiliations

Soon will be listed here.

Abstract

Background: Monitoring secular trends in blood pressure (BP) among children is important in predicting subsequent hypertension and cardiovascular disease. We investigated secular trends in BP using data from population-based annual screenings of Japanese schoolchildren.

Methods: The participants were 10 894 children (all fourth graders between 1994 and 2010 and all seventh graders between 1997 and 2010) living in the town of Ina in Saitama Prefecture, Japan. Body height, weight, and BP were measured, after which children were classified as non-overweight, overweight, or obese. Trends in variables relative to calendar year were analyzed using regression models.

Results: Systolic BP was significantly associated with calendar year among fourth- and seventh-grade boys (-0.350 and -0.434 mm Hg/year, respectively) and fourth- and seventh-grade girls (-0.513 and -0.473 mm Hg/year, respectively) (all P < 0.001), respectively, over time. Systolic BP and calendar year were significantly negatively correlated regardless of physique or sex among all fourth graders, but not among obese seventh-grade girls. In addition, diastolic BP and calendar year did not significantly correlate among seventh-grade overweight or obese boys or obese seventh-grade girls.

Conclusions: BP decreased among fourth-grade schoolchildren in Ina during the past 17 years, regardless of sex or physique. However, BP and calendar year did not significantly correlate among obese seventh graders.

Citing Articles

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