Table 2.
Demographic and natural history parameter values.
| Parameter | Value | Reference |
|---|---|---|
| Infection rate β (per partnership per month) | ec network: 0.053; exponential network: 0.053; random network: 0.068 | Fitted to obtain 43% prevalence |
| Treatment rate α (varied in scenario analysis) | 0–30% | (scenarios) |
| Average number of partners at one point in time | 3.7 | Survey reported in this study |
| HCV prevalence without treatment | 43% | [Aldridge et al. submitted] |
| Duration of injecting career | 20 years | This study |
| Rate of new entrants per year | 5% | This study |
| Disease progression rates | (varies by age) | 40 |
| Death rates | (life tables from Office for National Statistics, age-dependent) | 39 |
| Incremental annual death rate for PWID | 0.01 | 6 |
| Time period considered | 20 years |