Table 3.
Polysomnographic parameters comparisons.
| Variables | Overall (N = 286) | No OSAHS (N = 16) | Mild OSAHS (n = 38) | Moderate OSAHS (n = 89) | Severe OSAHS (n = 143) |
|---|---|---|---|---|---|
| AHI, events/h# | 29.9 (17.4, 49.4) | 3.5 (2.5, 4.5) | 10.6 (7.4, 12.8) | 22.3 (18.1, 26.6) | 49.3 (37.3, 61.9)& |
| OAI, events/h# | 7.5 (2.9, 19.9) | 0.4 (0.1, 0.8) | 2.3 (1.3, 3.2) | 4.7 (2.8, 9.1) | 17.6 (8.4, 30.8)& |
| MSpO2, %# | 94 (92, 95) | 96 (94.3, 96) | 95 (94, 95) | 94 (93, 95) | 93 (91, 94)& |
| ODI, events/h# | 22.9 (12.3, 43.7) | 3.2 (1.0, 4.0) | 6.9 (4.9, 11.4) | 16.7 (13.2, 23.2) | 43.6 (29.4, 59.2)& |
| LSpO2, %# | 80 (72, 84) | 89 (87, 93) | 84 (82, 88) | 82 (76, 85) | 73 (63, 80)& |
| TS90%, %# | 3.7 (0.9, 15) | 0.1 (0, 0.5) | 0.6 (0.1, 1.3) | 2.4 (0.8, 4.8) | 13.7 (3.4, 31.1)& |
OSAHS, obstructive sleep apnea-hypopnea syndrome; AHI, apnea-hypopnea index; OAI, obstructive apnea index; MSpO2, mean nocturnal oxygen saturation; ODI, oxygen desaturation index; LSpO2, lowest oxygen saturation; TS90%, time spent below oxygen saturation of 90%.
&
P < 0.05 vs. no OSAHS, mild, and moderate OSAHS.
#
Presented as median (interquartile range).