Blood pressure levels among primary school children.

Blood pressure, height, weight and body mass index were measured in 1,280 Irish children aged 5-12 years (640 boys and 640 girls). Mean systolic and diastolic pressures accurate to within +/- 3 mmHg for each one year age-sex-group are presented. Blood pressure levels were found to correlate positively and significantly with height, weight and body mass index in both sexes. Forty nine (8%) boys and 58 (9%) girls were found to have a mean systolic blood pressure level above the 95th percentile value recommended by the 1987 Task Force of the National Heart Lung and Blood Institute of America. Sixty eight (11%) boys and 71 (11%) girls had elevated diastolic levels above 95th percentile values, while 19 (3%) boys and 20 (3%) girls had an elevation of both systolic and diastolic pressure. The implications of these findings for Irish children are discussed.