Demographic, dietary, life style, and anthropometric correlates of blood pressure.
The relationships between systolic and diastolic blood pressure, and select demographic, dietary, life-style, and anthropometric variables were examined for a specialized sample of 10,419 adults, 18 years and over, from the National Health and Nutrition Examination Survey (NHANES) I conducted in 1971-1974. The bivariate relationships of blood pressure to each of the measurements above were examined using zero-order correlation coefficients, and Step-wise linear regression. Age and body mass index (BMI) played a major role in accounting for most of the variance in blood pressure. These two indices alone accounted for 94.5% and 89.0% of the variance in systolic and diastolic blood pressure. In contrast, only 5.5% and 11.0% of the changes in systolic and diastolic blood pressure were explained by all other variables combined. Diet explained less than 1% of the total variance observed for blood pressure for whites, and less than 5% for nonwhites. Select dietary variables such as sodium/potassium ratio, calories from fat, and % saturated fat were not significantly (p less than 0.001) correlated to blood pressure. On the other hand, food calcium, sodium/calcium ratio, food vitamin C, and calcium/phosphorus ratio were significantly correlated to both systolic and diastolic blood pressure.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001794:Blood Pressure; D001824:Body Constitution; D003710:Demography; D003971:Diastole; D004032:Diet; D005260:Female; D006801:Humans; D008019:Life Style; D008297:Male; D008875:Middle Aged; D009749:Nutrition Surveys; D044469:Racial Groups; D012737:Sex Factors; D013223:Statistics as Topic; D013599:Systole; D014481:United States