Table 2.
Unadjusted baseline characteristics for incident diabetes analysis (n = 650).
| Baseline Characteristic | No Diabetes (n = 468) | Incident Diabetes (n = 182) | P |
|---|---|---|---|
| ESS, (n) mean ± SD | (231) 11.1 ± 5.8 | (92) 11.1 ± 5.3 | .98 |
| Split-night study, n (%) | 204 (51.3) | 109 (68.1) | < .01 |
| Supine apneas index, events/h, mean ± SD | 0.1 ± 0.2 | 0.2 ± 0.4 | < .01 |
| CPAP use, n (%) | 148 (31.6) | 77 (42.3) | .01 |
| Respiratory arousal index, events/h, mean ± SD | 22.0 ± 24.8 | 31.9 ± 29.6 | < .01 |
| Spontaneous arousal index, events/h, mean ± SD | 17.4 ± 12.6 | 17.5 ± 11.7 | .99 |
| Total arousal index, events/h, mean ± SD | 41.6 ± 28.0 | 50.6 ± 31.8 | < .01 |
| Snoring index, events/h, mean ± SD | 0.3 ± 0.4 | 0.3 ± 0.5 | .11 |
| Obstructive apnea index, events/h, mean ± SD | 0.2 ± 0.4 | 0.3 ± 0.4 | .01 |
| Central apnea index, events/h, mean ± SD | 1.5 ± 4.9 | 2.1 ± 6.2 | .19 |
| Hypopnea index, events/h, mean ± SD | 9.0 ± 11.0 | 12.5 ± 13.9 | < .01 |
| Cheyne-Strokes pattern, n (%) | 11 (2.4) | 10 (5.5) | .05 |
| PLM index, events/h, mean ± SD | 0.2 ± 0.4 | 0.1 ± 0.3 | .20 |
| Desaturation > 4% index, events/h, mean ± SD | 19.1 ± 23.1 | 26.9 ± 26.5 | < .01 |
| Oxygen desaturation nadir, mean ± SD | 83.3 ± 7.2 | 81.4 ± 7.4 | < .01 |
| T = 60–89%_INDEX, % of TST, mean ± SD | 8.2 ± 16.9 | 13.4 ± 21.0 | < .01 |
| T = 90–99%_INDEX, % of TST, mean ± SD | 90.5 ± 18.4 | 86.3 ± 20.3 | .01 |
| Mean nocturnal oxygen saturation, mean ± SD | 92.9 ± 2.8 | 92.0 ± 4.0 | < .01 |
| Night oxygen requirement during sleep study, liters, (n) mean ± SD | (20) 2.4 ± 0.9 | (8) 2.3 ± 0.5 | .65 |
| Chronic oxygen requirement, n (%) | 22 (4.8) | 9 (5.0) | .84 |
| Apnea-hypopnea index, events/h, mean ± SD | 21.7 ± 26.1 | 30.3 ± 31.5 | < .01 |
(n) described separately in demographics with missing data. CPAP = continuous positive airway pressure, ESS = Epworth Sleepiness Scale, PLM = periodic limb movement.