Optimal characteristics of HCV scoring using external prospective validation (N=215)
| Risk factors, n | Validation with prospective data set | |
| HR (95% CI) | p | |
| <2 | Reference | |
| 3 | 1.10 (0.74 to 1.60) | 0.667 |
| 4 | 1.15 (0.78 to 1.65) | 0.504 |
| 5 | 2.17 (1.45 to 3.17) | <0.001 |
| ≥6 | 3.19 (2.30 to 5.51) | <0.001 |
| Score cut-points | Validation with prospective data set | |
| Sensitivity (%) | Specificity (%) | |
| ≥10 | 89 | 16 |
| ≥15 | 78 | 33 |
| ≥20 | 60 | 54 |
| ≥25 | 41 | 70 |
HCV, hepatitis C virus.