Table 4.
Incidence per 1000 Person‐Years and Hazard Ratios of AF After Ischemic Stroke
| No. of Patients | No. with AF | Days at Risk | Incidence/1000 y | RRa | 95% CI | RR1 b | 95% CI | |
|---|---|---|---|---|---|---|---|---|
| C (CHF) | ||||||||
| No | 42883 | 2155 | 36546725 | 21.52 | 1.00 | 1.00 | ||
| Yes | 4040 | 309 | 2371594 | 47.56 | 2.13 | 1.89–2.40 | 1.84 | 1.63–2.08 |
| H (HT) | ||||||||
| No | 21283 | 921 | 18111814 | 18.59 | 1.00 | 1.00 | ||
| Yes | 25640 | 1543 | 20806505 | 27.11 | 1.45 | 1.33–1.57 | 1.40 | 1.29–1.52 |
| A75 (age ≥75 y) | ||||||||
| No | 21381 | 814 | 20305243 | 14.65 | 1.00 | 1.00 | ||
| Yes | 25542 | 1650 | 18613076 | 32.40 | 2.16 | 1.99–2.35 | 2.03 | 1.87–2.22 |
| D (DM) | ||||||||
| No | 36539 | 1972 | 30670952 | 23.50 | 1.00 | 1.00 | ||
| Yes | 10384 | 492 | 8247367 | 21.80 | 0.92 | 0.84–1.02 | 0.86 | 0.78–0.96 |
| S (stroke) | ||||||||
| No | 35020 | 1828 | 29487199 | 22.66 | 1.00 | 1.00 | ||
| Yes | 11903 | 636 | 9431120 | 24.65 | 1.08 | 0.99–1.8 | 0.97 | 0.89–1.07 |
| Sex | ||||||||
| F | 22601 | 1286 | 18362377 | 25.60 | 1.00 | 1.00 | ||
| M | 24322 | 1178 | 20555942 | 20.95 | 0.82 | 0.76–0.89 | 0.94 | 0.87–1.02 |
| CHADS2 score | ||||||||
| 0 | 7108 | 199 | 6966135 | 10.44 | 1.00 | |||
| 1 | 13644 | 675 | 11796446 | 20.91 | 1.98 | 1.69–2.32 | ||
| 2 | 11905 | 728 | 9590001 | 27.75 | 2.61 | 2.23–3.05 | ||
| 3 | 7360 | 447 | 5689858 | 28.71 | 2.69 | 2.77–3.18 | ||
| 4 | 4917 | 297 | 3654171 | 29.71 | 2.77 | 2.32–3.32 | ||
| 5 | 1724 | 102 | 1092172 | 34.13 | 3.13 | 2.46–3.97 | ||
| 6 | 265 | 16 | 129536 | 45.15 | 4.03 | 2.42–6.71 |
Abbreviations: AF, atrial fibrillation; CHF, congestive heart failure; CI, confidence interval; DM, diabetes mellitus; F, female; HT, hypertension; M, male; RR, relative risk.
a
RR: unadjusted.
b
RR1: C, H, A75, D, S, and sex included in the model.