Abstract
The Federal Government of Canada established a $1.1 billion compensation programme in 1999 to support individuals who acquired hepatitis C virus (HCV) through blood products between January 1986 and July 1990. We aimed to describe the morbidity and mortality of this unique post-transfusion cohort (n=4550) followed for over 15years from 2000 to 2016. The age-standardized mortality rates were compared with that of the Canadian general population and HCV cohorts from other countries. We evaluated all-cause mortality using Kaplan-Meier survival curves and HCV-related and unrelated mortality using competing risk models. The age-standardized all-cause and HCV-related mortality rates per 10000 person-years were 127 (95% CI: 117-138) and 76 (95% CI: 69-85) for males, and 77 (95% CI: 69-87) and 43 (95% CI: 37-51) for females, respectively. The risk of death of the post-transfusion cohort was almost twice as high as the Canadian general population (rate ratio=1.8; 95% CI: 1.7-1.9). All-cause, HCV-related and HCV-unrelated mortality were 20%, 12% and 8%, respectively at 15years of follow-up. By comparison, HCV-related mortality rates per 10000 person-years for population-based HCV cohorts varied from 18 and 11 in Australia to 65 and 43 in Scotland for males and females, respectively. We reported long-term follow-up data for the largest post-transfusion cohort in the literature. The all-cause mortality rates were markedly higher than that of the Canadian general population. We also showed that HCV-related mortality were greater compared to other HCV cohorts. This suggests that continued efforts to identify and treat post-transfusion HCV are warranted.
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