Incidence of hospitalization for infection among patients with hepatitis B or C virus infection without cirrhosis in Taiwan: A cohort study
Journal
PLoS Medicine
Journal Volume
16
Journal Issue
9
Pages
e1002894
Date Issued
2019
Author(s)
Abstract
Background: Infection is a major complication in liver cirrhosis and causes major morbidity and mortality. However, the incidence and mortality related to these conditions in patients infected with hepatitis C virus (HCV) are unclear, as is whether antiviral therapy could change their infection risk. Methods and findings: In this community-based cohort study, a total of 115,336 adults (mean age 52.2 years; 35.6% men) without cirrhosis participating in the New Taipei City Health Screening in 2005-2008 were classified as having noncirrhotic HCV (NC-HCV) (n = 2,839), noncirrhotic hepatitis B virus (NC-HBV) (n = 8,316), or no HBV or HCV infection (NBNC) (n = 104,181). Participants were followed to their first hospitalization for infection or death after data linkage with the Taiwan National Health Insurance Research Database (NHIRD) and Death Registry. A Cox proportional hazard regression model, adjusted for age, sex, body mass index (BMI), smoking, alcohol consumption, education level, diabetes, renal function, systemic steroids, and history of hospitalization, was used to calculate hazard ratios (HRs) and 95% confidence intervals (CIs) for overall and individual sites of infection and infection-related mortality. The reference group was NBNC participants with normal to mildly elevated alanine aminotransferase (ALT) (<1.5 times upper normal limit [UNL]) levels. To further address the impact of antiviral treatment on infection risk, we conducted analyses of data from the nationwide NHIRD and compared the risks for hospitalization because of infections and infection-related deaths between patients with HCV who received antiviral therapy (n = 20,264) and those who remained untreated (n = 104,360). During a median 8.2-year followup, the incidence of hospitalization for infection was substantially higher in NC-HCV patients. Compared to the reference group, NC-HCV was associated with a significantly higher risk for hospitalization because of overall infections (adjusted HR: 1.22; 95% CI: 1.12-1.33), but we observed no increased risk for patients in the NC-HBV (adjusted HR: 0.94; 95% CI: 0.88-1.01) or NBNC group with moderate to markedly elevated ALT levels (adjusted HR: 1.03; 95% CI: 0.93-1.14). For specific sites of infection, the NC-HCV group had increased risks for septicemia and lower respiratory tract, reproductive, and urinary tract infections. We noted no increased risk for infection-related death among patients with NC-HCV. Patients with HCV who received antiviral therapy had significantly reduced infection-related hospitalization and death risks (adjusted HR: 0.79; 95% CI: 0.73-0.84 for infection-related hospitalization and adjusted HR: 0.08; 95% CI: 0.04-0.16 for infection-related deaths). Study limitations include the exclusion of patients with cirrhosis from the cohort, the possibility of unmeasured confounding, and the lack of information on direct-acting antiviral agents (DAAs). Conclusions: In this study, patients with NC-HCV were at increased risk for hospitalization for infection, while no increased risk was observed for NC-HBV-infected patients. Copyright ? 2019 Lee et al.
SDGs
Other Subjects
alanine aminotransferase; entecavir; lamivudine; peginterferon alpha2a; peginterferon alpha2b; ribavirin; telbivudine; tenofovir; antivirus agent; adult; age; aged; alcohol consumption; antiviral therapy; Article; assessment of humans; AST to Platelet Ratio Index; cerebrovascular accident; Charlson Comorbidity Index; chronic lung disease; cohort analysis; congestive heart failure; controlled study; dementia; education; estimated glomerular filtration rate; female; follow up; gastrointestinal hemorrhage; gender; genital tract infection; hepatitis B; Hepatitis B virus; hepatitis C; Hepatitis C virus; hospitalization; human; incidence; liver cirrhosis; lower respiratory tract infection; major clinical study; male; middle aged; morbidity; mortality rate; mortality risk; necrotizing fasciitis; retrospective study; sensitivity analysis; septicemia; skin infection; soft tissue infection; urinary tract infection; comparative study; epidemiology; factual database; hepatitis B; hepatitis C; incidence; mixed infection; mortality; prognosis; risk assessment; risk factor; Taiwan; very elderly; young adult; Adult; Aged; Aged, 80 and over; Antiviral Agents; Coinfection; Databases, Factual; Female; Hepatitis B; Hepatitis C; Hospitalization; Humans; Incidence; Male; Middle Aged; Prognosis; Retrospective Studies; Risk Assessment; Risk Factors; Taiwan; Young Adult
Publisher
Public Library of Science
Type
journal article