Cardiovascular risk factors among black schoolchildren: comparisons among four Know Your Body studies
Zuckerman, A.E. | Olevsky-Peleg, E. | Bush, P.J. | Horowitz, C. | Davidson, F.R. | Brown, D.G. | Walter, H.J.
Baseline cardiovascular risk factor variables were obtained from 1,041 black District of Columbia children in Grades 4-6 as part of a Know Your Body evaluation project. Screening included height, weight, triceps skinfold measurements, systolic and diastolic blood pressures, step-test for fitness, serum cholesterol, high-density lipoprotein cholesterol and thiocyanate. Results were compared with those in three other Know Your Body studies, Bronx, New York, Westchester, New York, and Los Angeles, and indicated that District of Columbia black children are more likely to have high cholesterol levels and to fail the fitness test than black children in the other studies. In the District of Columbia, obese children had significantly higher total serum cholesterol, systolic, diastolic, and high-density lipoprotein levels, and were less fit than other District of Columbia children; almost three-fourths of all of the children had one or more risk factors. Socioeconomic status was negatively correlated with diastolic blood pressure, skinfold thickness, and cholesterol levels and was positively correlated with high-density lipoprotein cholesterol. Rates of obesity and diastolic blood pressure were consistent with Bronx and Westchester comparisons suggesting that socioeconomic status interacts with ethnicity to determine risk factor levels. The existence of children with multiple risk factors in all of the Know Your Body studies supports the need for early intervention.
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