Cost-effectiveness of screening and vaccinating Asian and Pacific Islander adults for hepatitis B.
BACKGROUND
As many as 10% of Asian and Pacific Islander adults in the United States are chronically infected with hepatitis B virus (HBV), and up to two thirds are unaware that they are infected. Without proper medical management and antiviral therapy, up to 25% of Asian and Pacific Islander persons with chronic HBV infection will die of liver disease.


OBJECTIVE
To assess the cost-effectiveness of 4 HBV screening and vaccination programs for Asian and Pacific Islander adults in the United States.


METHODS
Markov model with costs and benefits discounted at 3%.


METHODS
Published literature and expert opinion.


METHODS
Asian and Pacific Islander adults (base-case age, 40 years; sensitivity analysis conducted on ages 20 to 60 years).


METHODS
Lifetime.


CONCLUSIONS
U.S. societal.


METHODS
A universal vaccination strategy in which all individuals are given a 3-dose vaccination series; a screen-and-treat strategy, in which individuals are given blood tests to determine whether they are chronically infected, and infected persons are monitored and treated; a screen, treat, and ring vaccinate strategy, in which all individuals are tested for chronic HBV infection and close contacts of infected persons are screened and vaccinated if needed; and a screen, treat, and vaccinate strategy, in which all individuals are tested and then vaccinated with a 3-dose series if needed. In all cases, persons found to be chronically infected are monitored and treated if indicated.


METHODS
Costs (2006 U.S. dollars), quality-adjusted life-years (QALYs), and incremental cost-effectiveness.


RESULTS
Compared with the status quo, the screen-and-treat strategy has an incremental cost-effectiveness ratio of $36,088 per QALY gained. The screen, treat, and ring vaccinate strategy gains more QALYs than the screen and treat strategy and incurs modest incremental costs, leading to incremental cost-effectiveness of $39,903 per QALY gained compared with the screen and treat strategy. The universal vaccination and screen, treat, and vaccinate strategies were weakly dominated by the other 2 strategies.


RESULTS
Over a wide range of variables, the incremental cost-effectiveness ratios of the screen and treat and screen, treat, and ring vaccinate strategies were less than $50,000 per QALY gained.


CONCLUSIONS
Results depend on the accuracy of the underlying data and assumptions. The long-term effectiveness of new and future HBV treatments is uncertain.


CONCLUSIONS
Screening programs for HBV among Asian and Pacific Islander adults are likely to be cost effective. Clinically significant benefits accrue from identifying chronically infected persons for medical management and vaccinating their close contacts. Such efforts can greatly reduce the burden of HBV-associated liver cancer and chronic liver disease in the Asian and Pacific Islander population.
Hutton
David W
DW
Stanford University, Asian Liver Center, and Stanford University School of Medicine, Stanford, California 94305-4026, USA.
Tan
Daniel
D
So
Samuel K
SK
Brandeau
Margaret L
ML
D000328:Adult; D001213:Asian; D003362:Cost-Benefit Analysis; D017325:Hepatitis B Vaccines / Q000008:administration & dosage*; D019694:Hepatitis B, Chronic / Q000208:ethnology / Q000517:prevention & control*; D006801:Humans; D017589:Immunization Programs / Q000191:economics; D008390:Markov Chains; D008403:Mass Screening / Q000191:economics*; D008875:Middle Aged; D044468:Native Hawaiian or Pacific Islander; D019057:Quality-Adjusted Life Years; D012680:Sensitivity and Specificity; D014481:United States; D014611:Vaccination / Q000191:economics*
D017325:Hepatitis B Vaccines