Medicaid enrollees were adults aged 18 to 64 years with full benefits who were not dually eligible for Medicare in Kentucky, Maine, Maryland, Michigan, North Carolina, Ohio, Pennsylvania, Virginia, West Virginia, and Wisconsin. Mean proportion of days covered was calculated for initiations from May 2019 through September 2020 to ensure 90 days of follow-up in the data. Vertical dashed line indicates the time of declaration of the COVID-19 public health emergency.