Table 1.
Demographics in each split
| Train | Valid | Test | Test, BNP subcohort | UK Biobank | Columbia | |
|---|---|---|---|---|---|---|
| Count | 20 269 | 4276 | 11 518 | 2163 | 34 280 | 36 975 |
| LVSD | 2175 (10.73%) | 462 (10.80%) | 1119 (9.72%) | 476 (22.01%) | 96 (0.28%) | 4656 (12.59%) |
| LVEF | 55.35 (13.31) | 55.36 (13.36) | 56.25 (13.21) | 50.11 (16.71) | 59.57 (6.16) | 53.85 (13.49) |
| Age | 61.5 (18.0) | 61.7 (17.5) | 62.1 (17.6) | 65.3 (17.1) | 63.6 (7.6) | 64.0 (16.5) |
| Male gender | 11 533 (56.90%) | 2385 (55.78%) | 6358 (55.20%) | 1235 (57.10%) | 16 396 (47.83%) | 19 645 (53.13%) |
| Female gender | 8735 (43.10%) | 1891 (44.22%) | 5160 (44.80%) | 928 (42.90%) | 17 884 (52.17%) | 17 319 (46.84%) |
| Other/unknown gender | 1 (0.00%) | 0 (0.00%) | 0 (0.00%) | 0 (0.00%) | 0 (0.00%) | 11 (0.03%) |
| White | 11 427 (56.38%) | 2492 (58.28%) | 6500 (56.43%) | 1164 (53.81%) | 33 166 (96.75%) | 14 106 (38.15%) |
| Asian | 2917 (14.39%) | 586 (13.70%) | 1743 (15.13%) | 318 (14.70%) | 459 (1.34%) | 767 (2.07%) |
| Black or African American | 1089 (5.37%) | 258 (6.03%) | 590 (5.12%) | 109 (5.04%) | 226 (0.66%) | 5781 (15.63%) |
| Other/unknown race | 4836 (23.86%) | 940 (21.98%) | 2685 (23.31%) | 572 (26.44%) | 429 (1.25%) | 16 321 (44.14%) |
| Hispanic | 2647 (13.06%) | 539 (12.61%) | 1374 (11.93%) | 300 (13.87%) | 9623 (26.03%) | |
| Non-Hispanic | 17 622 (86.94%) | 3737 (87.39%) | 10 144 (88.07%) | 1863 (86.13%) | 16 105 (43.56%) | |
| Unknown ethnicity | 0 (0.00%) | 0 (0.00%) | 0 (0.00%) | 0 (0.00%) | 11 247 (30.42%) | |
| Sinus rhythm | 15 587 (76.90%) | 3298 (77.13%) | 8940 (77.62%) | 1564 (72.31%) | 33 563 (97.91%) | |
| Pacemaker | 1664 (8.21%) | 330 (7.72%) | 745 (6.47%) | 217 (10.03%) | 55 (0.16%) | |
| Premature ventricular complexes | 1367 (6.74%) | 287 (6.71%) | 757 (6.57%) | 196 (9.06%) | 1201 (3.50%) | |
| Left bundle branch block | 975 (4.81%) | 224 (5.24%) | 535 (4.64%) | 142 (6.56%) | 311 (0.91%) |
Blank entries are missing: Hispanic ethnicity was not tracked in the UK Biobank, race and ethnicity were not tracked for all patients in the Columbia cohort, and ECG findings were not available in the Columbia cohort.