Table 1. Descriptive statistics of the sample stratified by region (Total sample N = 2,860).
| Distribution by age, sex and region | CAMPANIA | LAZIO | PIEMONTE | Total |
| Total sample N | 824 | 600 | 1,436 | 2,860 |
| % Males | 46.4% | 62.3% | 56.4% | 54.8% |
| Average age of the sample | 65.7 | 59.3 | 58.9 | 61.3 |
| Regional distribution by type of disease | CAMPANIA | LAZIO | PIEMONTE | Total |
| Viremic patients N (%) | 509 (61.8%) | 260 (43.3%) | 779 (54.2%) | 1,548 (54.1%) |
| Pre-2015 SVR N (%) | 18 (2.2%) | 10 (1.7%) | 97 (6.8%) | 125 (4.4%) |
| Post-2015 SVR N (%) | 297 (36.0%) | 330 (55.0%) | 560 (39.0%) | 1,187 (41.5%) |
| Type of exemption by disease | CAMPANIA | LAZIO | PIEMONTE | Total |
| 016 Exemption N (%) | 221 (26.8%) | 213 (35.5%) | 537 (37.4%) | 971 (34.0%) |
| 016 Exemption+others N (%) | 37 (4.5%) | 21 (3.5%) | 303 (21.1%) | 361 (1.6%) |
| Other exemptions N (%) | 539 (65.4%) | 356 (59.3%) | 574 (40%) | 1,469 (51.4%) |
| No exemption N (%) | 27 (3.3%) | 10 (1.7%) | 22 (1.5%) | 59 (2.1%) |
| Regional distribution of co-infected patients | CAMPANIA | LAZIO | PIEMONTE | Total |
| HCV mono-infected N (%) | 822 (99.8%) | 576 (96.0%) | 1,251(87.1%) | 2,649 (92.7%) |
| HCV-HIV co-infected N (%) | 0 | 24 (4.0%) | 183 (12.7%) | 207 (7.2%) |
| HCV-HBV co-infected N (%) | 2 (0.2%) | 0 | 2 (0.1%) | 4 (0.1%) |
| Regional distribution of people who use drugs | CAMPANIA | LAZIO | PIEMONTE | Total |
| HCV mono-infected N (%) | 816 (99.1%) | 349 (58.2%) | 1,151 (80.2%) | 2,316 (81.0%) |
| HCV ExTD mono-infected N (%) | 6 (0.7%) | 0 | 41 (2.9%) | 47 (1.6%) |
| HCV+HBV N (%) | 2 (0.2%) | 0 | 2 (0.1%) | 4 (0.1%) |
| HCV+HIV N (%) | 0 | 2 (0.3%) | 161 (11.2%) | 163 (5.7%) |
| HCV+HIV+ exTD N (%) | 0 | 0 | 14 (1.0%) | 14 (0.5%) |
| HCV+HIV+TD N (%) | 0 | 22 (3.7%) | 8 (0.6%) | 30 (1.0%) |
| HCV+TD N (%) | 0 | 227 (37.8%) | 59 (4.1%) | 286 (10.0%) |
SVR: sustained virological response