Table 2.
The differences between short MAD group and long MAD group.
| Parameters | Long MAD (n=256) | Short MAD (n=255) | P value |
|---|---|---|---|
| AHI, no/h | 43.1±24.8 | 31.7±24.7 | <0.01* |
| MAD, sec | 31.7±5.5 | 20.5±3.0 | <0.01* |
| AI, no/h | 36.5±23.7 | 22.4±17.0 | <0.01* |
| ODI, no/h | 41.4±26.5 | 30.7±23.6 | <0.01* |
| ESS | 11.6±5.2 | 9.9±4.9 | <0.01* |
| Sleep efficiency, % | 81.6±10.9 | 78.8±11.3 | <0.01* |
| sleep latency, min | 15.9±17.8 | 23.1±25.6 | <0.01* |
| N1 duration, min | 55.7±49.6 | 48.7±47.7 | 0.10 |
| N1, % of TST | 14.5±13.1 | 12.6±10.7 | 0.07 |
| N2 duration, min | 234.0±65.0 | 214.2±57.0 | <0.01* |
| N2, % of TST | 58.4±12.6 | 56.3±15.6 | 0.09 |
| N3 duration, min | 39.4±34.5 | 57.1±64.0 | <0.01* |
| N3, % of TST | 9.8±8.5 | 14.3±9.0 | <0.01* |
| R duration, min | 69.1±28.5 | 68.5±29.7 | 0.82 |
| R, % of TST | 17.1±6.3 | 17.7±7.4 | 0.32 |
| AOS, % | 89.1±5.9 | 92.1±3.8 | <0.01* |
| LOS, % | 72.3±12.3 | 78.9±9.0 | <0.01* |
| MOD, % | 9.7±4.9 | 6.9±2.7 | <0.01* |
AHI – apnea-hypopnea index; AI – arousal index; AOS – average oxygen saturation; ESS – Epworth Sleepiness Scale; LOS – lowest oxygen saturation; MAD – mean apnea/hypopnea duration; MOD – mean oxygen desaturation; ODI – oxygen desaturation index; TST – total sleep time.
*
Means significant difference between short MAD group and long MAD group, P<0.05.