Table 1 Clinical characteristics of study population
SCD event within the following time interval after ECG recording: | |||||||
|---|---|---|---|---|---|---|---|
Characteristic | n = 15,716 | 1–90 days (n = 11; T = 1) | 91–180 days (n = 16; T = 1) | 181–365 d (n = 47; T = 1) | 365–730 d (n = 84; T = 1) | 731–1825 d (n = 495; T = 2.5) | > 5 years (n = 320; T = 1.1) |
Age ± SD, years | 54.2 ± 5.8 | 63 ± 5 | 58 ± 6 | 62 ± 6 | 60 ± 7 | 59 ± 6 | 62 ± 7 |
Female, n(%) | 8680(55.2) | 18% | 31% | 30% | 29% | 36% | 42% |
White, n(%) | 11,431(72.7) | 82% | 50% | 60% | 60% | 59% | 56% |
Diabetes, n(%) | 1867(12.0) | 40% | 47% | 39% | 38% | 39% | 40% |
Hypertension, n(%) | 5475(35.0) | 40% | 60% | 64% | 68% | 71% | 68% |
Anti-hypertensive drugs, n(%) | 4803(30.6) | 40% | 53% | 62% | 70% | 68% | 66% |
CHD, n(%) | 756(4.8) | 20% | 33% | 36% | 39% | 30% | 25% |
Heart failure, n(%) | 732(4.7) | 0 | 25% | 15% | 9% | 10% | 9% |
Stroke, n(%) | 269(1.7) | 0 | 13% | 7% | 18% | 10% | 10% |
Peripheral artery disease, n(%) | 630(4.2) | 0 | 0 | 14% | 17% | 9% | 14% |
Current smoking, n(%) | 4107(26.2) | 40% | 47% | 36% | 39% | 38% | 29% |
Body-mass-index±SD, kg/m2 | 27.7 ± 5.4 | 32.4 ± 5.8 | 29.2 ± 5.4 | 29.1 ± 6.7 | 28.8 ± 6.2 | 29.4 ± 5.9 | 30.4 ± 6.6 |
Total cholesterol±SD, mmol/L | 5.6 ± 1.1 | 5.3 ± 0.8 | 5.0 ± 1.2 | 5.2 ± 1.2 | 5.2 ± 1.2 | 5.6 ± 1.0 | 5.3 ± 1.1 |
Triglycerides±SD, mmol/L | 1.5 ± 1.0 | 2.3 ± 2.0 | 1.5 ± 0.7 | 1.7 ± 1.1 | 1.9 ± 1.5 | 1.7 ± 1.2 | 1.7 ± 1.2 |
Alcohol consumption±SD, g/wk | 42.4 ± 97.0 | 11 ± 23 | 130 ± 390 | 28 ± 75 | 44 ± 94 | 46 ± 102 | 33 ± 76 |
Heart rate ± SD, bpm | 66.3 ± 10.3 | 74 ± 13 | 68 ± 11 | 65 ± 10 | 69 ± 14 | 67 ± 10 | 66 ± 12 |
Corrected QT ± SD, ms | 416.4 ± 19.7 | 428 ± 20 | 436 ± 44 | 429 ± 33 | 433 ± 35 | 423 ± 23 | 424 ± 22 |
QRS duration±SD, ms | 92.3 ± 12.7 | 97 ± 16 | 99 ± 12 | 109 ± 24 | 105 ± 24 | 98 ± 18 | 98 ± 18 |
BBB/IVCD, n(%) | 666(4.2) | 9% | 6% | 19% | 13% | 12% | 12% |
LBBB, n(%) | 111(0.7) | 4.5% | 3.1% | 2.7% | 3.0% | 1.0% | 1.2% |