Table 1.
Baseline Patient Characteristics Across Cohorts
| ORBIT-AF II (n=2,058) | UHealth (n=4,537) | Merlin.net linked to Medicare (n=39,710) | |
|---|---|---|---|
| Age, mean years (SD) | 71 (11) | 56 (19) | 77 (8.7) |
| Male | 1146 (56) | 1995 (44.0) | 24,119 (61) |
| Race* | |||
| White | 1805 (88) | 3867 (85.9) | 36,710 (92.5) |
| Black/African American | 77 (3.7) | 58 (1.3) | 1,997 (5.0) |
| American Indian/Alaska Native | 1 (0.05) | 41 (0.9) | 129 (0.3) |
| Asian | 48 (2.3) | 82 (1.8) | 191 (0.5) |
| Hypertension | 1656 (80) | 1670 (36.8) | 35,940 (91) |
| Diabetes mellitus | 524 (25) | 906 (20.0) | 15,366 (39) |
| Prior myocardial infarction | 204 (9.9) | 507 (11.2) | 12,405 (31) |
| Heart failure | 328 (16) | 733 (16.2) | 25,054 (63) |
| Prior Stroke/TIA | 251 (12) | 348 (7.7) | 3,820 (9.6) |
| CHA2DS2-VASc score, mean (SD) | 3.42 (1.72) | 2.22 (1.79) | 4.9 (1.3) |
| CHA2DS2-VASc Score | |||
| 0 | 71 (3.5) | 617 (13.6) | 0 |
| 1 | 205 (10) | 1462 (32.2) | 167 (0.4) |
| 2-9 | 1782 (87) | 2458 (54.2) | 39,543 (99.6) |
| Cardiac implanted electronic device | |||
| Permanent pacemaker | 175 (8.5) | 89 (2.0) | 20,156 (51) |
| Implantable cardioverter-defibrillator | 28 (1.4) | 68 (1.5) | 19,554 (49) |
Baseline characteristics across cohorts.
Values are presented as n (%), unless noted otherwise.
*
Subgroups may not sum to 100% due to differences in cohort definition and/or categorization across cohorts.
SD: standard deviation; TIA: cerebrovascular accident/transient ischemic attack.