Sleep indices, respiratory events, and oxygen saturation
| Group 1 | Group 2 | Group 3 | |
|---|---|---|---|
| Total sleep time (min) | 329 (33) | 310 (68) | 328 (33) |
| Sleep latency (min) | 16.40 (11.27) | 23.31 (14.54) | 21.73 (16.04) |
| Sleep efficiency (%) | 83.60 (7.22) | 75.23 (17.44) | 80.92 (10.05) |
| Arousals (n/h) | 5.15 (3.71)2-150 | 5.31 (2.14)2-150 | 2.83 (1.51) |
| Light sleep (%) | 71.22 (8.94) | 72.08 (12.87) | 67.14 (8.53) |
| Deep sleep (%) | 12.45 (9.76) | 12.10 (7.31) | 14.23 (7.86) |
| REM sleep (%) | 16.05 (7.12) | 16.63 (7.96) | 19.45 (7.42) |
| Sleep heart rate (beats/min) | 57.93 (6.49) | 57.11 (7.15) | 54.24 (5.85) |
| AHI (n/h) | 11.10 (19.42)† | 14.79 (20.52)† | 2.82 (6.43) |
| Mean apnoea duration (s) | 17.64 (4.26)2-150 | 16.23 (3.63) | 13.47 (4.73) |
| Longest apnoea (s) | 31.56 (9.33)† | 24.67 (10.85)2-150 | 16.95 (7.08) |
| Apnoea total time (min) | 11.82 (12.27)† | 8.55 (13.88)2-150 | 0.65 (0.56) |
| Mean Sao 2 (%) | 96.23 (1.12) | 96.42 (1.35) | 97.03 (0.69) |
| Minimum Sao 2 (%) | 90.10 (4.23)2-150 | 89.45 (5.24)2-150 | 93.42 (2.48) |
| Total time at Sao 2 < 90% (min) | 0.89 (2.40)2-150 | 1.42 (3.23)2-150 | 0.01 (0.05) |
Values are mean (SD).
↵2-150 p < 0.05 v group 3; †p < 0.01 v group 3.
AHI, apnoea-hypopnoea index; REM, rapid eye movement; Sao 2, arterial oxygen saturation.