Table 2. Sleep and respiratory characteristics.
| Variables | ALL | DM | Non-DM | P value |
|---|---|---|---|---|
| (n = 203) | (n = 100) | (n = 103) | ||
| Epworth Sleepiness Scale score | 6.0±3.4 | 5.7±3.3 | 6.2±3.5 | 0.39 |
| Total sleep time, min | 337.9±120.4 | 329.4±116.9 | 346.2±123.7 | 0.33 |
| WASO, min | 123.3±90.6 | 127.1±95.9 | 119.4±85.2 | 0.55 |
| Sleep efficiency, % | 63.4±23.8 | 64.0±26.7 | 62.8±20.6 | 0.72 |
| Arousal Index, no./h | 24.9±18.1 | 24.8±19.0 | 25.0±17.2 | 0.92 |
| AHI, no./h | 29.3±22.0 | 29.0±22.7 | 29.3±21.5 | 0.92 |
| AHI<5 | 12 (5.9) | 9 (9.0) | 3 (2.9) | 0.55 |
| AHI≥5, <15 | 53 (26.1) | 26 (26.0) | 27 (26.2) | 0.77 |
| AHI≥15, <30 | 59 (29.1) | 29 (29.0) | 30 (29.1) | 0.77 |
| AHI≥30 | 79 (38.9) | 36 (36.0) | 43 (41.8) | 0.24 |
| Apnea, no./h | 14.3±17.7 | 12.9±16.3 | 15.3±18.7 | 0.32 |
| Central apnea, no./h | 3.3±8.3 | 2.6±7.9 | 3.6±8.2 | 0.33 |
| Obstructive apnea, no./h | 8.2±12.4 | 7.8±11.0 | 8.5±13.6 | 0.68 |
| 3%ODI, no./h | 25.3±21.8 | 26.0±216 | 24.3±22.1 | 0.58 |
| Time at SpO2<90%, min | 29.7±70.5 | 29.8±54.6 | 29.5±83.9 | 0.97 |
| Lowest SpO2, % | 85 (79–89) | 83 (78–88) | 86 (78–88) | 0.22 |
Data are presented as means±SD, No. (%) or median (IQR)
WASO = waking after sleep onset, AHI = apnea-hypopnea index
ODI = oxygen desaturation index, SpO2 = peripheral capillary oxygen saturation