Table 2.
Baseline Characteristics According to Stroke Severity
| Characteristics | Overall (n = 1030) | Severe stroke (n = 711) | Not-Severe Stroke (n = 319) | P value Severe Stroke vs Not-Severe Stroke |
|---|---|---|---|---|
| Women, No. (%) | 576 (55.9) | 425 (59.8) | 151 (47.3) | <0.001 |
| White race, No. (%) | 764 (74.2) | 544 (76.5) | 220 (69.0) | 0.011 |
| Age, mean (±SD), years | 77.0 (±11.1) | 78.8 (±10.5) | 73.2 (±11.6) | < .0001 |
| AF Type, No. (%) | ||||
| New Onset | 258 (25.0) | 170 (23.9) | 88 (27.6) | |
| Paroxysmal | 250 (24.3) | 157 (22.1) | 93 (29.2) | 0.005 |
| Permanent | 522 (50.7) | 384 (54.0) | 138 (43.3) | |
| Congestive heart failure, No. (%) | 349 (33.9) | 258 (36.3) | 91 (28.5) | 0.015 |
| Hypertension, No. (%) | 934 (90.7) | 648 (91.1) | 286 (89.7) | 0.45 |
| Diabetes mellitus, No. (%) | 395 (38.3) | 282 (39.7) | 113 (35.4) | 0.20 |
| Prior ischemic stroke, No. (%) | 278 (27.0) | 208 (29.3) | 70 (21.9) | 0.015 |
| Peripheral vascular disease, No. (%) | 107 (10.4) | 77 (10.8) | 30 (9.4) | 0.49 |
| Coronary artery disease, No. (%) | 403 (39.0) | 284 (39.9) | 118 (37.0) | 0.37 |
| Chronic kidney disease, No. (%) | 192 (18.6) | 147 (20.7) | 45 (14.1) | 0.012 |
| Prior deep venous thrombosis or pulmonary embolism, No. (%) | 102 (9.9) | 81 (11.4) | 21 (6.6) | 0.017 |
| Dementia, No. (%) | 154 (15.0) | 135 (19.0) | 19 (6.0) | < .0001 |
| Smoking status | ||||
| Current smoker, No. (%) | 110 (10.7) | 66 (9.2) | 44 (13.8) | 0.041 |
| Nonsmoker, No. (%) | 878 (85.2) | 611 (85.9) | 267 (83.7) | |
| Unknown, No. (%) | 42 (4.1) | 34 (4.8) | 8 (2.5) | |
| Active malignancy, No. (%) | 108 (10.5) | 78 (11.0) | 30 (9.4) | 0.45 |
| CHA2DS2VASc | ||||
| Mean score (SD) | 4.8 (1.8) | 5.0 (1.7) | 4.3 (1.8) | < .0001 |
| Score, No. (%) | ||||
| 0 – 1 | 38 (3.7) | 16 (2.3) | 22 (6.9) | |
| 2 | 61 (5.9) | 29 (4.1) | 32 (10.0) | |
| 3 | 134 (13.0) | 89 (12.5) | 45 (14.1) | |
| 4 | 214 (20.8) | 140 (19.7) | 74 (23.2) | |
| 5 | 219 (21.3) | 154 (21.7) | 65 (20.4) | < .0001 |
| 6 | 191 (18.5) | 142 (20.0) | 49 (15.4) | |
| 7 | 106 (10.3) | 85 (12.0) | 21 (6.6) | |
| 8 | 53 (5.1) | 45 (6.3) | 8 (2.5) | |
| 9 | 14 (1.4) | 11 (1.5) | 3 (0.9) | |
| Warfarin use, No. (%) | 292 (28.3) | 206 (29.0) | 86 (27.0) | 0.51 |
| Admission INR | ||||
| Median (IQR) | 1.6 (1.2 – 2.3) | 2.0 (1.3 – 2.4) | 1.8 (1.2 – 2.2) | 0.13 |
| Statin use, No (%) | 400 (38.8) | 260 (36.6) | 140 (43.9) | 0.026 |
SD: standard deviation; CHA2DS2VASc: a risk assessment tool for stroke in patients with AF which assigns 1 point for congestive heart failure, 1 point for hypertension, 2 points for age 75 years or older, 1 point for diabetes mellitus, 2 points for history of stroke or transient ischemic attack, 1 point for vascular disease including prior myocardial infarction or peripheral arterial disease, 1 point for age 65 to 74 years, and 1 point for female sex; INR: international normalized ratio; IQR: interquartile range