Table 2.
Number of Events and Event Rates Within 1 Year per 100 Patient‐Years With Exact 95% Poisson CIs by CHA2DS2‐VASc Score at Discharge Among 6368 Patients With New‐Onset POAF After Isolated First‐Time Coronary Bypass Surgery and Without OAC
| CHA2DS2‐VASc score | No. (%) of patients | Ischemic stroke | Any thromboembolism | Major bleeding | |||
|---|---|---|---|---|---|---|---|
| No. of events (n=147) | Event rate/100 patient‐years (95% CI) | No. of events (n=200) | Event rate/100 patient‐years (95% CI) | No. of events (n=174) | Event rate/100 patient‐years (95% CI) | ||
| 1 | 328 (5.2) | 1 | 0.3 (0.0–1.8) | 2 | 0.7 (0.8–2.4) | 5 | 1.7 (0.5–3.9) |
| 0 | … | 1 | … | 3 | … | ||
| 2 | 1066 (16.7) | 7 | 0.7 (0.3–1.5) | 13 | 1.4 (0.7–2.3) | 16 | 1.7 (1.0–2.7) |
| 2 | … | 4 | … | 9 | … | ||
| 3 | 1662 (26.1) | 22 | 1.5 (0.9–2.3) | 33 | 2.2 (1.5–3.1) | 39 | 2.7 (1.9–3.6) |
| 5 | … | 7 | … | 14 | … | ||
| 4 | 1621 (25.5) | 33 | 2.3 (1.6–3.3) | 43 | 3.0 (2.2–4.1) | 57 | 4.1 (3.1–5.3) |
| 12 | … | 6 | … | 28 | … | ||
| 5 | 1038 (16.3) | 39 | 4.4 (3.1–6.0) | 50 | 5.6 (4.2–7.4) | 31 | 3.5 (2.4–4.9) |
| 10 | … | 6 | … | 16 | … | ||
| 6 | 423 (6.6) | 24 | 6.7 (4.3–9.9) | 31 | 8.7 (5.9–12.4) | 12 | 3.3 (1.7–5.8) |
| 5 | … | 2 | … | 7 | |||
| 7 | 179 (2.8) | 16 | 11.4 (6.5–18.5) | 21 | 15.2 (9.4–23.3) | 9 | 6.1 (2.8–11.6) |
| 7 | … | 3 | … | 2 | … | ||
| 8–9 | 51 (0.8) | 5 | 11.3 (3.7–26.3) | 7 | 15.8 (6.4–32.6) | 5 | 11.6 (3.7–27.0) |
| 1 | … | 1 | … | 1 | … | ||
Gray cells indicate the number of events within the first 30 days after discharge. CHA2DS2‐VASc indicates congestive heart failure, hypertension, age ≥75 years, diabetes, previous stroke or TIA [transient ischemic attack], vascular disease, age 65 to 74 years, sex category female; OAC, oral anticoagulation; and POAF, postoperative atrial fibrillation.