Adjusted Odds Ratios for Prescribing or Continuing Warfarin during Visits by Patients with Atrial Fibrillation (N = 1771): United States, 2001 to 2006
| Characteristics | OR (95% CI) |
|---|---|
| Risk factors* | |
| None | 1.00 |
| Any | 1.40 (1.00–1.94) |
| Age (years) | |
| <65 | 1.08 (0.66–1.78) |
| 65–75 | 0.90 (0.62–1.31) |
| >75 | 1.00 |
| Sex | |
| Female | 0.69 (0.50–0.94) |
| Male | 1.00 |
| Race | |
| White | 1.00 |
| Other | 0.49 (0.29–0.83) |
| Primary payment source | |
| Private | 1.00 |
| Medicare | 1.56 (1.01–2.39) |
| Other | 1.82 (0.99–3.36) |
| Region | |
| Northeast | 1.00 |
| Midwest | 0.60 (0.39–0.93) |
| South | 0.35 (0.22–0.55) |
| West | 0.53 (0.33–0.87) |
| Metropolitan area | |
| Urban | 1.00 |
| Rural | 1.02 (0.61–1.70) |
| Survey year | |
| 2001 | 1.00 |
| 2002 | 1.60 (0.92–2.78) |
| 2003 | 1.73 (0.93–3.19) |
| 2004 | 1.42 (0.77–2.62) |
| 2005 | 1.99 (1.10–3.61) |
| 2006 | 2.02 (1.16–3.51) |
| Primary care physician | |
| Yes | 0.99 (0.68–1.43) |
| No | 1.00 |
| Visits during last 12 months | |
| 0 (including new patients) | 1.00 |
| 1–2 | 1.45 (0.68–3.09) |
| ≥3 | 1.85 (0.96–3.56) |
| Aspirin | |
| Prescribed | 0.62 (0.41–0.95) |
| Not prescribed | 1.00 |
* Risk factors: stroke, diabetes, hypertension, congestive heart failure, rheumatic mitral valve disease, arterial embolism.
N, unweighted sample size; OR, odds ratio. Bolded values were statistically significant (confidence intervals did not include 1.00).