Table 2.
Independent Predictors of Warfarin Use in Intermediate Risk Patients
| OR | ±95% CI | P | |
|---|---|---|---|
| Congestive heart failure | 6.68 | 2.79–15.97 | <0.0001 |
| Nonparoxysmal AF | 4.08 | 2.94–5.68 | <0.0001 |
| Age ≥75 years | 1.49 | 0.97–2.28 | 0.067 |
| Minor risk factors | |||
| Coronary artery disease | 2.53 | 1.55–3.61 | <0.0001 |
| Age 65–74 years | 1.81 | 1.31–2.51 | <0.0001 |
| Female | 1.50 | 1.09–2.08 | 0.013 |
Abbreviations: AF, atrial fibrillation, CI, confidence interval; OR, odds ratio. Variables included in the model were congestive heart failure, hypertension, diabetes mellitus, age 65 to 74 years, age >75 years, race, gender, paroxysmal or nonparoxysmal AF, and coronary artery disease or peripheral vascular disease.