Table 2.
Cumulative incidences of ECC among (1) HCV-treated, (2) HCV-untreated and (3) HCV-uninfected cohorts
| (1) HCV-treated | (2) HCV-untreated | (3) HCV-uninfected | p values | ||||
|---|---|---|---|---|---|---|---|
|
| |||||||
| N=8,331 | N=33,324 | N=33,324 | (1, 2, 3) | (1, 2) | (1, 3) | (2, 3) | |
| Follow-up years, mean ± SD | 4.766±1.82 | 4.822±2.00 | 4.988±1.91 | ||||
| Event number, N (%) | 6 (0.07) | 19 (0.06) | 7 (0.02) | ||||
| Competing mortality, N (%) | 386 (4.63) | 4,405 (13.22) | 1,458 (4.38) | ||||
| CI, % (95% CI) | 0.088 (0.035-0.198) | 0.095 (0.047-0.179) | 0.048 (0.017-0.119) | 0.0285 | 0.5436 | 0.0132 | 0.0209 |
ECC: extrahepatic cholangiocarcinoma; HCV: hepatitis C virus; SD: standard deviation; CI: cumulative incidence; 95% CI: 95% confidence interval of cumulative incidence.