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Patient characteristics.
| Characteristic | n (%) | |
| Male sex |
|
12 (75.0) |
| Mean age (SD years) |
|
69.8 (10.1) |
| Indication for warfarin |
|
|
|
|
Atrial fibrillation | 7 (43.8) |
|
|
Venous thrombosis | 2 (12.5) |
|
|
Heart valve | 6 (37.5) |
|
|
Other | 1 (6.3) |
| Target INR range |
|
|
|
|
2.0-3.0 | 10 (62.5) |
|
|
2.5-3.5 | 2 (12.5) |
|
|
Other (specified by physician) | 4 (25.0) |
