Table 1.
Study-level demographic information (ECG cohort).
| BWH | MGH | UCSF | ||||
|---|---|---|---|---|---|---|
| Case | Control | Case | Control | Case | Control | |
| Number of studies | 2249 | 8684 | 405 | 437 | 372 | 731 |
| Age, years ± SD | 69.9 ± 10.4 | 62.3 ± 13.2 | 72.9 ± 9.0 | 73.8 ± 8.8 | 67.7 ± 12.9 | 67.5 ± 11.7 |
| Age Groups | ||||||
| ≤30, n (%) | 2 (0.1) | 97 (1.1) | 1 (0.2) | 1 (0.2) | 2 (0.5) | 0 (0.0) |
| 30–50, n (%) | 78 (3.5) | 1,370 (15.8) | 7 (1.7) | 6 (1.4) | 36 (9.7) | 69 (9,4)) |
| 50–70, n (%) | 901 (40.1) | 4548 (52.4) | 143 (35.3) | 135 (30.9) | 136 (36.6) | 278 (38.0) |
| 70–90, n (%) | 1242 (55.2) | 2606 (30.0) | 254 (62.7) | 295 (67.5) | 198 (53.2) | 384 (52.5) |
| >90, n (%) | 26 (1.2) | 63 (0.7) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| HR, bpm ± SD | 76.4 ± 16.7 | 75.9 ± 18.5 | 78.6 ± 16.6 | 75.1 ± 19.8 | 79.6 ± 18.7 | 72.2 ± 16.3 |
| Sinus rhythm, n (%) | 1,736 (77.2) | 8,072 (93.0) | 283 (69.9) | 371 (84.9) | 365 (98.1) | 729 (99.7) |
HR heart rate, BWH Brigham and Women’s Hospital, MGH Massachusetts General Hospital, UCSF University of California San Francisco. N represents the number of studies.