Cost-Effectiveness of Hepatitis B Mass Screening and Management in High-Prevalent Rural China: A Model Study From ۲۰۲۰ to ۲۰۴۹

Background  Chronic hepatitis B (CHB) is highly prevalent among adults in rural China and better management of those populations is of vital importance for viral hepatitis elimination. Adult immunization has been the subject of much controversy in previous studies. This study estimates the cost-effectiveness of population-based hepatitis B screening, treatment, and immunization strategy (comprehensive strategy) in rural areas with high prevalence under the national policy of sharp- drop drug prices. Methods  We constructed a Markov model comparing ۴ strategies in a ۳۰-year horizon from the healthcare payer perspective: (۱) the conventional pattern; (۲) screening and treating infected (treatment); (۳) screening and immunizing susceptible individuals (immunization); and (۴) the comprehensive strategy. Screening intensity ranged from ۵۰% to ۱۰۰%. Outcomes were measured by costs, quality-adjusted life-years (QALYs), incremental cost-effectiveness ratios (ICERs), and clinical outcomes. Results  The costs for the conventional pattern, treatment strategy, immunization strategy, and comprehensive strategy were US ۳۴۱, ۳۵۱, ۳۱۸, and ۳۲۳, respectively. In addition, effects were ۱۷.۴۵, ۱۷.۵۷, ۱۷.۴۶, and ۱۷.۵۸ QALYs, respectively. The ICER of the comprehensive strategy was US ۳۵/QALY gained at ۵۰% screening intensity and ۴۲۰ US/QALY gained at ۱۰۰%. The net monetary benefit increased with increasing screening intensity and declined after ۹۰%, with the highest value of US۴۰ ۶۹۳. All new infections and ۵۲.۵% mortality could be avoided from ۲۰۲۰ to ۲۰۴۹ if all patients were properly treated and all susceptible individuals were immunized. The results were stable within a wide range of parameters. Conclusion  It was cost-effective to implement the mass hepatitis B screening, treatment, and immunization strategy in areas of rural China with high prevalence, and the strategy gained the most net monetary benefit at a screening intensity of ۹۰%. Although it was impractical to fulfill ۱۰۰% coverage, efforts should be made to obtain more people screened.

کلیدواژه ها:

Economic Evaluation ، Viral Hepatitis ، Antiviral Treatment ، Adult Vaccination