Table 4 Bleeding risk scoring system: HAS-BLED. Adapted from Pisters R et al. Chest. 2010;138;1093–100 [42]
| Risk factor | Points | |
|---|---|---|
| H | Hypertension | 1 |
| A | Abnormal renal and liver function (1 point each) | 1 or 2 |
| S | Stroke | 1 |
| B | Bleeding | 1 |
| L | Labile INRs | 1 |
| E | Elderly (age >65 y) | 1 |
| D | Drugs or alcohol (1 point each) | 1 or 2 |
| Risk score | Bleeds per 100 patient-years | Risk of bleeding |
| 0 | 1.13 | Low |
| 1 | 1.02 | Moderate |
| 2 | 1.88 | |
| 3 | 3.74 | High |
| 4 | 8.70 | |
| 5 | 12.50 |