Table 3.
Backward Multivariable Logistic Regression Model for Predicting Postoperative Atrial Fibrillation After LAA Closure
| Covariates | Unmatched Cohort | Propensity-Matched Cohort | ||
|---|---|---|---|---|
| OR (95% CI) | P Value | OR (95% CI) | P Value | |
| LAA closure | 3.73 (3.00–4.64) | <0.001 | 3.88 (2.89–5.20) | <0.001 |
| Age | 1.05 (1.04–1.05) | <0.001 | 1.04 (1.03–1.06) | <0.001 |
| History of AF | 1.04 (1.04–1.05) | <0.001 | 2.11 (1.55–2.88) | <0.001 |
| β-Blocker | 1.19 (1.08–1.31) | 0.001 | ||
| Antiarrhythmics | 0.42 (0.25–0.71) | 0.001 | ||
| Aortic valve surgery | 1.40 (1.25–1.57) | <0.001 | ||
| Mitral valve surgery | 1.74 (1.51–2.00) | <0.001 | ||
| Combined CABG + valve or other | 1.30 (1.13–1.50) | <0.001 | ||
| C-statistic | 0.68 | 0.75 | ||
AF indicates atrial fibrillation; CABG, coronary artery bypass grafting; CI, confidence interval; LAA, left atrial appendage; and OR, odds ratio.