Variable | Value | Source |
---|---|---|
Rate of pipe sharing (s) | 80.0% | Ivsins et al. [44] |
Number of pipes in circulation (N) | 90,000 | |
Percentage of pipes not cleaned (d) | 33.0% | Scheinmann et al. [47] |
Number of sharing partners (m) | 6.30 | Gyarmathy and Neaigus [48] |
Proportion of crack users who are HCV negative (I) | 83.0% | Fischer et al. [49] |
Proportion of crack users who are HCV positive (q) | 17.0% | Fischer et al. [49] |
Probability of HCV infection from single crack pipe (t) | 2.00% |