Table. Emergency Department Patients With Primary Atrial Fibrillation or Atrial Flutter Eligible for Anticoagulation Initiation, Stratified by Study Phasea.
| Characteristic | Initiation-eligible patients (n = 1203) | Study phase | |
|---|---|---|---|
| Control (n = 387) | Intervention (n = 816) | ||
| Age, y | |||
| Mean (SD) [range] | 74.6 (10.2) [27.0-101.0] | 74.8 (10.2) [27.0-99.0] | 74.5 (10.3) [38.0-101.0] |
| Median (IQR) | 74.0 (68.0-82.0) | 75.0 (68.0-82.0) | 74.0 (68.0-81.0) |
| Category | |||
| <65 | 163 (13.5) | 54 (14.0) | 109 (13.4) |
| 65-74 | 447 (37.2) | 138 (35.7) | 309 (37.9) |
| ≥75 | 593 (49.3) | 195 (50.4) | 398 (48.8) |
| Sex | |||
| Female | 585 (48.6) | 179 (46.3) | 406 (49.8) |
| Male | 618 (51.4) | 208 (53.7) | 410 (50.2) |
| Race and ethnicity | |||
| Asian | 163 (13.5) | 54 (14.0) | 109 (13.4) |
| Black or African American | 71 (5.9) | 11 (2.8) | 60 (7.4) |
| Hispanic or Latinx | 117 (9.7) | 38 (9.8) | 79 (9.7) |
| White | 803 (66.7) | 270 (69.8) | 533 (65.3) |
| Otherb | 49 (4.1) | 14 (3.6) | 35 (4.3) |
| Index atrial arrhythmia | |||
| Atrial fibrillation | 994 (82.6) | 311 (80.4) | 683 (83.7) |
| Atrial flutter or AFF | 209 (17.4) | 76 (19.6) | 133 (16.3) |
| Comorbidity | |||
| History of AFF | 697 (57.9) | 228 (58.9) | 469 (57.5) |
| Hypertension | 987 (82.0) | 310 (80.1) | 677 (83.0) |
| Vascular disease | 847 (70.4) | 270 (69.8) | 577 (70.7) |
| Diabetes | 377 (31.3) | 116 (30.0) | 261 (32.0) |
| Congestive heart failure | 166 (13.8) | 53 (13.7) | 113 (13.8) |
| Ischemic stroke, transient ischemic attack, or thromboembolic disease | 118 (9.8) | 46 (11.9) | 72 (8.8) |
| CHA2DS2-VASc score | |||
| Mean (SD) [range] | 4.0 (1.5) [2.0-9.0] | 4.0 (1.6) [2.0-9.0] | 4.0 (1.5) [2.0-9.0] |
| Median (IQR) | 4.0 (3.0-5.0) | 4.0 (3.0-5.0) | 4.0 (3.0-5.0) |
| Category | |||
| 2-3 | 513 (42.6) | 168 (43.4) | 345 (42.3) |
| 4-5 | 491 (40.8) | 157 (40.6) | 334 (40.9) |
| ≥6 | 199 (16.5) | 63 (16.3) | 137 (16.8) |
Abbreviations: AFF, atrial fibrillation or atrial flutter; CHA2DS2-VASc, congestive heart failure, hypertension, age 75 years or older, diabetes, stroke, vascular disease, age 65 to 74 years, and female sex.
a
Unless indicated otherwise, values are presented as No. (%) of patients.
b
Includes American Indian or Alaska Native and Native Hawaiian or Other Pacific Islander.