CPAP group | BVS group | p Value | |
Effective CPAP level (cm H2O) | 14 (3) | 13 (2) | 0.65 |
Min Spo2 (%) | 70 (12) | 74 (10) | 0.27 |
%TST <90 (%) | 39 (16–80) | 57 (14–86) | 0.66 |
AHI (events/h) | 22 (29) | 13 (12) | 0.22 |
Sleep efficiency (%) | 73 (18) | 80 (12) | 0.18 |
% REM | 23 (12) | 22 (12) | 0.75 |
Change Tcco2 NREM-REM (mm Hg) | 5 (3)* | 4 (2)† | 0.25 |
Data presented as mean (SD) or median (interquartile range) as appropriate.
BVS, bilevel ventilatory support; CPAP, continuous positive airway pressure; Spo2, oxygen saturation; TST, total sleep time; AHI, apnoea-hypopnoea index; NREM, non-rapid eye movement sleep; REM, rapid eye movement sleep; Tcco2, transcutaneous carbon dioxide pressure.
*n = 13; †n = 15.