Table 2

Distribution of measured blood pressure by level, sex, age and country

 TotalNormalPrehypertensionStage 1Stage 2
nPer centSEnPer centSEnPer centSEnPer centSE
ENGLAND
All7382252834.20.7324243.90.7123516.70.53765.10.3
Sex
 Males355576121.40.8190353.50.970919.90.71825.10.4
 Females3826176746.20.91339350.952613.70.61955.10.4
Age
 20–392618127348.61.2111542.61.121080.6200.80.2
 40–59296296632.60.9136045.90.948216.30.71555.20.4
 60–79180128916.1176742.61.554330.21.320111.20.9
CANADA
All3485221466.11.795527.21.42595.40.3571.3*0.2*
Sex
 Males164995160.62.453832.92.21405.90.5200.7*0.2*
 Females1836126371.61.441721.61.11194.80.6372.0*0.5*
Age
 20–39115999284.01.915515.21.8
 40–59123178563.43.335130.22.8815.30.7141.1*0.3*
 60–79109543739.42.044942.92.216813.81.1413.9*1.0*
USA
All10 003466350.30.8361536.00.7129611.00.44292.70.2
Sex
 Males5033199842.21.0210942.71.071312.20.62132.80.3
 Females4970266558.31.0150629.30.85839.70.52162.70.2
Age
 20–393394221065.21.1100729.71.11484.40.4290.70.1
 40–593586160846.51.3137139.11.147311.90.71342.60.3
 60–79302384530.81.3123741.31.267521.21.12666.70.5
  • *Interpret with caution (coefficient of variation 16.6–33.3%).

  • †Too unreliable to be reported (coefficient of variation greater than 33.3%).

  • Normal: Systolic<120 and diastolic<80. Prehypertension: 120≤systolic<140 or 80≤diastolic<90. Stage 1: 140≤systolic<160 or 90≤diastolic<100. Stage 2: systolic≥160 or diastolic≥100. Regardless of medication use.