Lottery-Based Incentives Do Not Increase COVID-19 Vaccination Rates
State-based lotteries have created little impact on vaccine uptake, and researchers suggest that resources may be better spent targeting underlying reasons for vaccine hesitancy.
Would you be more willing to get vaccinated against the COVID-19 virus if you could participate in a lottery for cash and prizes? The answer was surprisingly no, according to a study led by a School of Public Health researcher.
Published in the Journal of the American Medical Association, the study found that Ohio’s “Vax-a-Million” lottery-based incentive system, intended to increase COVID-19 vaccination rates, was not associated with an increase in COVD-19 vaccinations.
Prior reports in the media had suggested that the Ohio lottery increased COVID-19 vaccinations, leading other states to use COVID-19 vaccine incentive lotteries in an attempt to increase slowing vaccination rates. “However, prior evaluations of the Ohio vaccine incentive lottery did not account for other changes in COVID-19 vaccination rates in the United States, such as those that may have been due to expansion of vaccination to ages 12-15,” says corresponding author Allan J. Walkey, associate professor of health law, policy & management and a professor of medicine at the School of Medicine (MED).
Using data from the U.S. Centers of Disease Control to evaluate trends in vaccination rates among adults 18 and older, Walkey and a team of MED researchers compared vaccination rates before and after the Ohio lottery versus other states in the U.S. that did not yet have vaccine incentive lottery programs. Vaccination rates in other states served as a “control” for vaccination trends measured in Ohio, allowing the researchers to account for factors besides the Ohio lottery (such expanding vaccine eligibility to adolescents) throughout the country.
“Our results suggest that state-based lotteries are of limited value in increasing vaccine uptake. Therefore, the resources devoted to vaccine lotteries may be more successfully invested in programs that target underlying reasons for vaccine hesitancy and low vaccine uptake,” says Walkey, who is also a professor of medicine at the School of Medicine and a physician at Boston Medical Center.
The researchers believe identifying interventions that can successfully increase COVID-19 vaccination rates is a critical public health issue necessary to curb the pandemic. “It is important to rigorously evaluate strategies designed to increase vaccine uptake, rapidly deploy successful strategies, and phase out those that do not work,” Walkey says.
Although Walkey and his colleagues were sorry to see that state lottery incentives were not associated with an increase COVID-19 vaccinations, they hope their findings will lead to a shift in focus away from ineffective and expensive lotteries, and on to further study of other programs that may more successfully increase vaccine uptake.