Despite Ohio Gov. Mike DeWine touting the state’s $5 million vaccine lottery as a “success” in promoting higher vaccination rates, a recent study found no evidence the initiative contributed to an upward trend in inoculations.

The Vax-A-Million incentive program started in May and has already awarded vaccinated applicants lucky enough to have their names pulled from the list of eligible candidates. Ohioans ages 12 to 17 who received one or more doses had the chance to win one of five scholarship awards, and anyone over 18 with the same qualifications is eligible for one of five $1 million prizes.