Table 1.
Baseline characteristics of subjects
| Normal (n = 6706) | IGT (n = 3806) | Diabetes (n = 82) | P | |
|---|---|---|---|---|
| Male, % | 53.3 | 51.4 | 57.3 | 0.142 |
| Age, years | 42.9 (8.2, 42.7–43.1) | 45.7 (8.5, 45.4–45.9) | 50.1 (7.6, 48.5–51.8) | <0.001 |
| BMI, kg/m2 | 25.6 (3.6, 25.5–25.7) | 26.3 (4.1, 26.2–26.5) | 28.5 (5.3, 27.3–29.6) | <0.001 |
| Systolic blood pressure, mmHg | 134.8 (19.8, 134.3–135.2) | 144.6 (22.7, 143.8–145.3) | 148.4 (25.6, 142.8–154.0) | <0.001 |
| Diastolic blood pressure, mmHg | 80.6 (11.8, 80.4–80.9) | 84.7 (13.0, 84.3–85.2) | 87.9 (13.3, 84.9–90.8) | <0.001 |
| Cholesterol, mmol/l | 6.4 (1.3, 6.4–6.5) | 6.6 (1.4, 6.5–6.6) | 6.9 (1.5, 6.6–7.2) | <0.001 |
| Smoker, % | 36.0 | 30.6 | 30.5 | <0.001 |
| Cardiac disease, % | 6.9 | 9.6 | 23.2 | <0.001 |
| Heart rate, bpm | 73.6 (14.1, 73.2–73.9) | 78.8 (16.5, 78.3–79.3) | 79.3 (15.8, 75.8–82.7) | <0.001 |
| QRS duration, ms | 86.9 (8.4, 86.7–87.1) | 87.1 (8.6, 86.8–87.3) | 88.5 (11.9, 85.9–91.1) | 0.163 |
| QTc, ms | 404.6 (26.9, 403.9–405.2) | 414.6 (27.5, 413.7–415.4) | 415.4 (31.2, 408.5–422.2) | <0.001 |
| Left ventricular hypertrophya, % | 30.5 | 33.2 | 25.6 | 0.008 |
| Electrocardiographic signs of myocardial infarction, % | 0.4 | 0.7 | 4.9 | <0.001 |
| Electrocardiographic signs of coronary artery disease, % | 8.5 | 11.9 | 23.2 | <0.001 |
aAssessed with Sokolow-Lyon electrocardiographic criterion