Table 3.
No. of Patients | No. with AF | Days at Risk | Incidence/1000 y | RRa | 95% CI | RR1 b | 95% CI | |
---|---|---|---|---|---|---|---|---|
C (CHF) | ||||||||
No | 7557 | 145 | 5437116 | 9.73 | 1.00 | 1.00 | ||
Yes | 330 | 11 | 155211 | 25.87 | 2.61 | 1.41–4.83 | 2.15 | 1.16–4.01 |
H (HT) | ||||||||
No | 3984 | 65 | 2702956 | 8.79 | 1.00 | 1.00 | ||
Yes | 3903 | 91 | 2889371 | 11.51 | 1.32 | 0.96–1.81 | 1.33 | 0.96–1.84 |
A75 (age ≥75 y) | ||||||||
No | 4174 | 62 | 3455690 | 6.56 | 1.00 | 1.00 | ||
Yes | 3713 | 94 | 2136637 | 16.08 | 2.43 | 1.76–3.35 | 2.53 | 1.82–3.53 |
D (DM) | ||||||||
No | 6746 | 134 | 4833573 | 10.13 | 1.00 | 1.00 | ||
Yes | 1141 | 22 | 758754 | 10.60 | 1.05 | 0.67–1.64 | 0.95 | 0.60–1.50 |
S (stroke) | ||||||||
No | 6205 | 119 | 4540882 | 9.58 | 1.00 | 1.00 | ||
Yes | 1682 | 37 | 1051445 | 12.86 | 1.33 | 0.92–1.92 | 1.12 | 0.77–1.63 |
Sex | ||||||||
F | 3734 | 68 | 2523210 | 9.85 | 1.00 | 1.00 | ||
M | 4153 | 88 | 3069117 | 10.48 | 1.07 | 0.78–1.47 | 1.30 | 0.94–1.80 |
CHADS2 score | ||||||||
0 | 1648 | 17 | 1331204 | 4.67 | 1.00 | |||
1 | 2772 | 55 | 2062120 | 9.75 | 2.08 | 1.21–3.58 | ||
2 | 1679 | 38 | 1130772 | 12.28 | 2.62 | 1.48–4.64 | ||
3 | 1013 | 26 | 642719 | 14.79 | 3.13 | 1.70–5.77 | ||
4 | 610 | 17 | 344879 | 18.02 | 3.81 | 1.95–7.47 | ||
5 | 148 | 3 | 72272 | 15.17 | 3.16 | 0.93–10.80 | ||
6 | 17 | 0 | 8361 | 0.00 |
Abbreviations: AF, atrial fibrillation; CHF, congestive heart failure; CI, confidence interval; DM, diabetes mellitus; F, female; HT, hypertension; M, male; RR, relative risk.
RR: unadjusted.
RR1: C, H, A75, D, S, and sex included in the model.