American Journal of Epidemiology Vol. 122, No. 3: 366-377
Copyright © 1985 by The Johns Hopkins University School of Hygiene and Public Health
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ETHNIC DIFFERENCES IN BLOOD PRESSURE AND HEART RATE OF CHICAGO SCHOOL CHILDREN
1Chicago Department of Health Chicago, IL
2Department of Community Health and Preventive Medicine, Northwestern University Medical School 303 East Chicago Avenue, Chicago, IL 60611
Send reprint requests to Dr. Kiang Liu at this address.
In 19751978, the Chicago Department of Health conducted a screening program that included measurements of blood pressure, heart rate, height, weight, triceps skinfold thickness, and arm circumference, and calculation of body mass index and muscle circumference for non-public school children. Based on data on 4,086 boys and girls aged 510 years from the program, this study examined the ethnic differences in blood pressure and heart rate among children of white, black, Latino, and Oriental ethnicity. Mean levels for both systolic and diastolic blood pressure were higher for Oriental and black children than for white and Latino children. These differences were independent of age, height, weight, and skinfold thickness. The black children had a much lower mean heart rate than the other children. A seasonal variation was observed for systolic blood pressure, i.e., within each sex group, the mean systolic blood pressure adjusted for age, skinfold thickness, and height tended to be higher in spring than in fall and winter. (Noteno child was screened during the summer because of summer break.) With control for season, ethnic differences in systolic blood pressure disappeared, but not the ethnic differences in diastolic blood pressure and heart rate.
ethnic groups; blood pressure; heart rate; seasons
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