Table 2– Casual and ambulatory blood pressure (BP) data according to the presence of undiagnosed obstructive sleep apnoea/hypopnoea
PopulationBPAHI
<1515–30>30
Total
 Subjects n23415581
 CasualSystolic134.1±16.5136.5±14.4136.3±15.6
Diastolic83.7±7.985.5±8.685.2±7.6
 Ambulatory
  24 hSystolic114.2±12.8117.9±12.7*119.3±14.7*
Diastolic72.6±6.474.0±8.174.4±7.9
  DiurnalSystolic118.4±13.6121.9±13.5*123.2±14.8*
Diastolic75.5±6.976.7±8.677.0±8.3
  NocturnalSystolic101.1±12.8106.2±12.9*107.6±14.2*
Diastolic63.7±7.666.1±8.3*66.6±7.8*
Females
 Subjects n1647831
 CasualSystolic132.1±10.4134.4±15.4136.3±17.5
Diastolic82.4±6.083.3±8.985.0±9.0
 Ambulatory
  24 hSystolic113.0±11.0116.9±13.7*119.0±15.9*
Diastolic71.5±5.973.5±8.374.8±9.6
  DiurnalSystolic119.3±11.6121.3±16.5123.9±16.2*
Diastolic74.6±4.575.9±8.577.3±11.0
  NocturnalSystolic101.6±10.8106.2±13.9*108.4±15.2*
Diastolic63.9±6.365.7±8.666.4±8.9*
Males
 Subjects n707750
 CasualSystolic136.4±17.3137.9±16.0136.4±15.9
Diastolic83.7±7.985.5±8.685.2±7.6
 Ambulatory
  24 hSystolic115.2±13.8118.7±12.9*119.7±14.9*
Diastolic73.9±7.474.8±8.874.3±9.9
  DiurnalSystolic117.8±14.6122.9±14.5*123.0±14.8*
Diastolic75.0±6.977.7±9.676.7±8.8
  NocturnalSystolic100.8±14.8106.2±14.3*107.1±15.2*
Diastolic63.6±9.867.1±9.1*66.9±8.6*
  • AHI: apnoea/hypopnoea index. An adjustment was made for age, body mass index dyslipidaemia, type 2 diabetes, smoking status, and alcohol consumption. *: p<0.05 from subjects presenting an AHI <15.