Table 1 General characteristics of study subjects according to type 2 diabetes
|  | Total (n = 1113) | Diabetes (n = 266) | Non-diabetes (n = 847) | P-Value |
|---|---|---|---|---|
Demographics | ||||
 Age, y | 66.0 (62.0, 71.0) | 67 (64.0, 72.0) | 65.0 (62.0, 70.0) | 0.000 |
 Male, n (%) | 675 (60.6) | 171 (64.3) | 504 (59.5) | 0.164 |
 BMI, kg/m2 | 26.30 (23.88, 28.80) | 27.27 (24.50, 29.80) | 25.95 (23.63, 28.31) | 0.000 |
 Waist circumference, cm | 90 (80, 99) | 91 (80, 101) | 89 (80, 99) | 0.010 |
 Neck circumference, cm | 39 (35, 41) | 38 (36, 40) | 38 (35,40) | 0.653 |
 WHR | 0.88 (0.78, 1.01) | 0.92 (0.79, 1.05) | 0.87 (0.78, 0.98) | 0.019 |
 SBP, mmHg | 130 (122, 143) | 140 (130, 160) | 130 (120, 140) | 0.000 |
 DBP, mmHg | 76 (70, 83) | 80 (70, 87) | 76 (70, 82) | 0.003 |
 Smoking, n (%) | 160 (14.4) | 31 (11.7) | 129 (15.2) | 0.252 |
 Drinking, n (%) | 98 (8.8) | 35 (13.2) | 63 (7.5) | 0.010 |
 Plasma glucose, mmol/L | 6.18 (5.38,6.19) | 6.47 (6.04,7.91) | 5.18 (4.57,5.90) | 0.048 |
 HbA1c, % | 5.52 (5.10,5.63) | 5.67 (5.44,6.43) | 4.32 (4.04,5.62) | 0.045 |
 HbA1c, mmol/mol | 36.81 (32.23,36,9) | 38.44 (36.10,46.70) | 36.80 (31.61,37.83) | 0.043 |
Sleep parameters | ||||
 AHI, events/h | 26.7 (14.6, 45.2) | 30.3 (17.2, 48.7) | 25.4 (14.0, 44.3) | 0.010 |
 ODI, events/h | 21.4 (10.2, 40.5) | 22.9 (10.9, 41.5) | 20.7 (10.1, 39.8) | 0.467 |
 MSpO2, % | 93 (92, 95) | 94 (92, 95) | 93 (92, 95) | 0.184 |
 LSpO2, % | 80 (72, 85) | 80 (70, 86) | 81 (73, 85) | 0.367 |
 TST, h | 7.03 (6.11, 7.42) | 7.09 (6.16, 7.43) | 7.01 (5.96, 7,42) | 0.139 |
 TSA90, min | 14.11 (2.28, 60.32) | 14.19 (2.48, 60.93) | 12.73 (1.98, 56.81) | 0.179 |
 T90, % | 3.51 (0.61, 15.37) | 3.51 (0.64, 15.81) | 3.29 (0.49, 14.49) | 0.272 |
 Maximum apnea time, s | 63.12 (42.44, 85.20) | 63.51 (41.96, 86.13) | 61.80 (42.11, 84.23) | 0.722 |
 Average apnea time, s | 22.47 (19.46, 25.46) | 22.72 (19.46, 25.68) | 21.91 (19.46, 25.10) | 0.095 |
Medical history, n (%) | ||||
 Severity of OSA |  |  |  | 0.030 |
 Mild OSA | 285 (25.6) | 55 (20.7) | 230 (27.2) |  |
 Moderate OSA | 336 (30.2) | 76 (28.6) | 260 (30.7) |  |
 Severe OSA | 492 (44.2) | 135 (50.8) | 357 (42.1) |  |
 CHD | 246 (22.1) | 106 (39.8) | 140 (16.5) | 0.000 |
 Hyperlipidemia | 312 (28.0) | 128 (47.7) | 185 (21.8) | 0.000 |
 Hypertension | 706 (63.4) | 217 (81.6) | 489 (57.7) | 0.000 |
 Atrial fibrillation | 69 (6.2) | 31 (11.6) | 38 (4.5) | 0.000 |
 Carotid atherosclerosis | 286 (25.7) | 99 (37.2) | 187 (22.1) | 0.000 |
 COPD | 78 (7.0) | 22 (8.3) | 56 (6.6) | 0.355 |