Table 2

Characteristics of Study Participants According to Blood Pressure at University Entry (N = 18,881)—HAHS

University Entry JNC-7 Blood Pressure Category§
Normal (n = 6,748)Pre-Hypertensive (n = 9,577)Stage 1 Hypertension (n = 2,176)Stage 2 Hypertension (n = 380)Total (N = 18,881)
University entry (1914–1952)
 Age, yrs18.3 ± 1.718.4 ± 1.818.5 ± 2.018.4 ± 1.818.4 ± 1.8
 Systolic blood pressure, mm Hg108.6 ± 6.7123.4 ± 7.2136.5 ± 11.0147.9 ± 17.1120.1 ± 12.7
 Diastolic blood pressure, mm Hg66.9 ± 6.874.9 ± 7.683.1 ± 10.094.1 ± 16.373.4 ± 9.9
 BMI, kg/m2*21.4 ± 2.421.8 ± 2.522.0 ± 2.721.9 ± 2.921.7 ± 2.5
 Physical activity <1 h/week2.4 (158)3.4 (316)3.5 (73)5.2 (19)3.1 (566)
  1 to 4 h/week31.3 (2,021)30.3 (2,780)25.9 (547)27.9 (102)30.1 (5,450)
  ≥5 h/week30.3 (1,958)31.1 (2,861)33.1 (697)27.9 (102)31.0 (5,618)
  Unknown hours27.4 (1,765)27.4 (2,516)30.6 (646)35.2 (129)27.9 (5,056)
  Varsity athletics8.5 (551)7.8 (715)6.9 (145)3.8 (14)7.9 (1,425)
 Current smoker37.6 (2,122)34.0 (2,772)29.7 (562)22.5 (76)34.5 (5,532)
Middle-age (1962 or 1966)
 Age, yrs44.4 ± 8.445.7 ± 9.349.5 ± 10.152.9 ± 9.545.8 ± 9.3
 Hypertensive5.5 (371)10.1 (968)19.3 (421)30.0 (114)9.9 (1,874)

Values are mean ± SD or n (%).

Abbreviations as in Table 1.

  • * BMI missing for 168 men.

  • Physical activity information missing for 766 men.

  • Smoking status unknown for 2,853 men.

  • § Current Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure (JNC-7) criteria categories: normotensive (<120/<80 mm Hg), pre-hypertension (120 to 139/80 to 89 mm Hg), stage 1 hypertension (140 to 159/90 to 99 mm Hg), and stage 2 hypertension (≥160/≥100 mm Hg).