Table 1.
Age at First Test, Age at Clearance, and Number at Risk of Clearance for Confirmed Infection and Viremia
| Confirmed Infection | Viremia | |||||||
|---|---|---|---|---|---|---|---|---|
| Age Band | First Tested HCV RNA–Positive (Cumulative % of 106) |
Number Cleareda (% of 36) | Number Lost to Follow-up (% of 70) |
Number at Riskb | First Tested HCV RNA–Positive (cumulative % of 179) |
Number Cleareda (% of 87) |
Number Lost to Follow-up (% of 92) |
Number at Riskb |
| 0 d–3 d | 9 (8.5) | 0 (0) | 0 (0) | 9 | 23 (12.8) | 0 (0) | 4 (4.3) | 23 |
| 3 d–6 w | 26 (33.0) | 0 (0) | 1 (1.4) | 35 | 45 (38.0) | 5 (5.7) | 2 (2.2) | 64 |
| 6 w–3 mo | 22 (53.8) | 1 (2.8) | 0 (0) | 56 | 35 (57.5) | 7 (8.0) | 5 (5.4) | 92 |
| 3 mo–6 mo | 26 (78.3) | 7 (19.4) | 10 (14.3) | 81 | 44 (82.1) | 28 (23.0) | 17 (18.5) | 124 |
| 6 mo–12 mo | 14 (91.5) | 7 (19.4) | 13 (18.6) | 78 | 22 (94.4) | 22 (25.3) | 17 (18.5) | 101 |
| 12 mo–24 mo | 6 (97.2) | 16 (44.4) | 22 (31.4) | 64 | 6 (97.8) | 20 (23.0) | 21 (22.8) | 68 |
| 24 mo–36 mo | 3 (100) | 3 (8.3) | 14 (20.0) | 29 | 4 (100) | 3 (3.4) | 16 (17.4) | 31 |
| 36 mo–60 mo | 0 (100) | 2 (5.6) | 8 (11.4) | 12 | 0 (100) | 2 (2.3) | 8 (8.7) | 12 |
| >60 mo | 0 (100) | 0 (0) | 2 (2.9) | 2 | 0 (100) | 0 (0) | 2 (2.2) | 2 |
| Total | 106 | 36 | 70 | 179 | 87 | 92 | ||
Abbreviation: HCV, hepatitis C virus.
The numbers shown cleared no later than in the period indicated but may have cleared in an earlier period, depending on when they first tested positive.
The numbers at risk include those who entered the risk set minus those who cleared or were lost to follow-up in previous time periods.