Table 3– Contingency tables testing the association between unrecognised obstructive sleep apnoea and rate of systolic or diastolic hypertension as defined by ambulatory blood pressure monitoring
AHI
<1515–30>30All
Subjects n23415581470
Systolic hypertension16 (6.8)16 (10.3)*15 (18.5)*47 (10.0)
Diastolic hypertension30 (12.8)29 (18.7)*19 (23.5)*78 (16.6)
Systolic and/or diastolic hypertension35 (14.9)35 (22.6) *24 (29.6)*94 (20.0)
  • Data presented as n (%). AHI: apnoea/hypopnea index *: p<0.05.