Cases (n = 316) n (%) | Controls (n = 2000) n (%) | Odds ratiosa (95 % CI) | P value | |
---|---|---|---|---|
Warfarin | ||||
Non-useb | 276 (87.3) | 1813 (90.6) | 1 (−) | |
Current use | 32 (10.1) | 157 (7.8) | 1.10 (0.69–1.78) | 0.68 |
< 1 month | 3 (0.9) | 8 (0.4) | 1.55 (0.38–6.34) | 0.54 |
1–12 months | 15 (4.7) | 44 (2.2) | 1.78 (0.89–3.55) | 0.10 |
> 1 year | 14 (4.4) | 105 (5.3) | 0.73 (0.38–1.40) | 0.34 |
Recent use | 2 (0.6) | 11 (0.5) | 0.91 (0.19–4.42) | 0.91 |
Past use | 6 (1.9) | 19 (0.9) | 1.31 (0.49–3.46) | 0.59 |
Antithrombotic | ||||
Non-use AP and non-use warfarinb | 18 (5.7) | 128 (6.4) | 1 (−) | |
Current AP and non-current warfarin | 252 (79.7) | 1596 (79.8) | 1.00 (0.59–1.71) | 1.00 |
Non-current AP and current warfarin | 24 (7.6) | 116 (5.8) | 1.01 (0.50–2.02) | 0.99 |
Current AP and current warfarin | 8 (2.5) | 41 (2.1) | 0.89 (0.35–2.30) | 0.82 |