Table 3– Respiratory measurements
MalesFemalesAll
Subjects284270
AHI15.2±26.3 (0.0–106.2)23.9±35.6 (0.0–180.0)20.4±32.3 (0.0–180.0)
CAI6.3±19.0 (0.0–176.4)14.9±32.6 (0.0–97.6)11.4±28.1 (0.0–176.4)
OAI2.0±2.3 (0.0–8.6)2.5±4.7 (0.0–26.5)2.3±3.9 (0.0–26.5)
HI6.9±4.8 (0.0–71.8)6.5±9.6 (0.0–42.6)6.6±11.8 (0.0–71.8)
Baseline S pO2 %92.7±3.0 (86.0–98.0)91.0±3.5 (83.0–98.0)91.7±3.4 (83.0–98.0)
% of TST where S pO2 <90%13.4±22.4 (0.0–76.2)29.8±36.6 (0.0–100.0)23.2±32.5 (0.0–100.0)
  • Data are presented as n or mean±sd (range). AHI: apnoea/hypopnoea index; CAI: central apnoea index; OAI: obstructive apnoea index; HI: hypopnoea index; SpO2: arterial oxygen saturation measured by pulse oximetry; TST: total sleep time.