Dormont High School (Pittsburgh, Pennsylvania) blood pressure study.

A cohort of high school students examined in a school health study between 1957-63 were followed to 1977, when as adults still living in the area, 373 (71%) were reexamined. Mean age at 17-year follow-up was 34 years. The mean systolic blood pressure (SBP) at follow-up for men was 125 mm Hg, women 111 mm Hg. The boys' SBP had increased 4.0 Hg while the girls' declined 4.0 mm Hg in 17 years. The boys had gained an average of 37.2 lbs, and 1 inch, the girls 16.7 lbs, and 0.5 inch. Tracking was studied in several ways. The correlation coefficient of the SBP taken 17 years apart ws 0.44 for boys and 0.39 for girls. Current SBP was 115 mm Hg for boys with the lowest tenth of high school SBPs and 131 mm Hg for the boys in the highest tenth. Thirty-nine had hypertension, DBP greater than or equal to 90, or were on antihypertensive medication. They had had substantially higher SBP and weight in high school, and had gained more weight from high school to adult life than controls. After adjusting for high school SBP, weight gain for boys was the major determinant of subsequent high blood pressure (BP).