Table 1.

Eligibility criteria.

Research question	Study implements and evaluates a non-financial intervention intended to address COVID-19 vaccine hesitancy and increase vaccine uptake
Population	Adults who are hesitant to receive the COVID-19 vaccine
Intervention	Intervention implemented to address COVID-19 vaccine hesitancy and increase COVID-19 vaccination rates
Comparator	Eligible comparators included: comparison between experimental group(s) vs. control group(s), comparison between >2 intervention groups (receiving different interventions), or comparison between COVID-19 vaccination rates before and after implementing the intervention
Outcome	COVID-19 vaccination rate (i.e., self-reported, immunization/medical records)
Study design	Peer-reviewed comparative studies (i.e., randomized controlled trials, non-randomized trials, cohort studies, case-control studies)