Table 1 The characteristics of 18,441 participants
| Feature |
Training set (n = 12,909) |
Testing set (n = 5532) |
Total population (n = 18,441) |
|---|---|---|---|
| Characteristics | |||
| Age | 50.88 (19, 96) | 50.81 (18, 93) | 50.86 (18, 96) |
| Age subgroup, y | |||
| 18–64 | 11,170 (86.6) | 4815 (87.0) | 15,991 (86.7) |
| > 64 | 1733 (13.4) | 717 (13.0) | 2450 (13.3) |
| Gender (male) | 7738 (59.9) | 3297 (59.6) | 11,035 (59.8) |
| SBP, mmHg | 128.69 ± 17.76 | 128.04 ± 17.43 | 128.49 ± 17.66 |
| Heart rate, beats/min | 75.71 ± 7.80 | 75.48 ± 7.93 | 75.64 ± 7.84 |
| Pulse, beats/min | 77.40 ± 10.88 | 76.92 ± 10.94 | 77.25 ± 10.90 |
| Waistline, cm | 83.66 ± 10.10 | 83.70 ± 9.89 | 83.67 ± 10.04 |
| Co-morbid conditions | |||
| Hypertension | 1502 (11.6) | 868 (15.7) | 2370 (12.9) |
| Diabetes mellitus | 524 (4.1) | 326 (5.9) | 850 (4.6) |
| Hyperlipidemia | 177 (1.4) | 210 (3.8) | 387 (2.1) |
| Family history | 287 (2.2) | 235 (4.2) | 522 (2.8) |
| Ever-smoker | 563 (4.4) | 284 (5.1) | 847 (4.6) |
| Laboratory values | |||
| Glucose, mmol/L | 5.42 ± 1.36 | 5.31 ± 1.36 | 5.39 ± 1.36 |
| HDL, mmol/L | 1.23 ± 0.21 | 1.21 ± 0.25 | 1.22 ± 0.22 |
| TC, mmol/L | 4.40 ± 0.62 | 4.40 ± 0.80 | 4.40 ± 0.68 |
| Total protein, g/L | 68.89 ± 4.21 | 69.15 ± 3.68 | 68.96 ± 4.06 |
| Albumin, g/L | 44.30 ± 2.78 | 44.21 ± 2.40 | 44.27 ± 2.67 |
| Albumin/Globulin | 1.84 ± 0.28 | 1.82 ± 0.29 | 1.84 ± 0.28 |
| γ-GLT, U/L | 27.33 ± 26.86 | 27.12 ± 25.18 | 27.27 ± 26.37 |
| Platelets, 10^9/L | 217.36 ± 58.42 | 218.57 ± 57.25 | 217.72 ± 58.07 |
| Carotid atherosclerosis | |||
| Yes | 4587 (35.5) | 1966 (35.5) | 6553 (35.5) |
| Age 18–64 y | 3246 (25.2) | 1418 (25.6) | 4670 (25.3) |
| Age > 64 y | 1335 (10.3) | 548 (9.9) | 1883 (10.2) |
| No | 8322 (64.5) | 3566 (64.5) | 11,888 (64.5) |
| Age 18–64 y | 7924 (61.4) | 3397 (61.4) | 11,321 (61.4) |
| Age > 64 y | 398 (3.1) | 169 (3.1) | 567 (3.1) |