S1 Data -

(XLS)</p

Cumulative number of fully vaccinated adults aged 18 to 64 in Massachusetts and other four comparison states.

Abbreviations: MA, Massachusetts; CT, Connecticut; RI, Rhode Island; NJ, New Jersey; VT, Vermont. Note: Vertical dash line indicates Massachusetts COVID-19 Vaccine announcement date. Source: Author’s analysis of the Centers for Disease Control and Prevention COVID-19 Vaccine Tracker.</p

Massachusetts COVID-19 lottery registration deadline, drawing date, and announcement date.

Massachusetts COVID-19 lottery registration deadline, drawing date, and announcement date.</p

Descriptive statistics for state-level characteristics in 2020.

Descriptive statistics for state-level characteristics in 2020.</p

Results of state-day level difference-in-differences regression estimates of Massachusetts COVID-19 vaccine lottery on the number of vaccinations among adults 18 years or older.

Results of state-day level difference-in-differences regression estimates of Massachusetts COVID-19 vaccine lottery on the number of vaccinations among adults 18 years or older.</p