Effect of Text Messaging and Behavioral Interventions on COVID-19 Vaccination Uptake: A Randomized Clinical Trial.

Importance: COVID-19 vaccine uptake among urban populations remains low.

Objective: To evaluate whether text messaging with outbound or inbound scheduling and behaviorally informed content might increase COVID-19 vaccine uptake.

Design, Setting, And Participants: This randomized clinical trial with a factorial design was conducted from April 29 to July 6, 2021, in an urban academic health system.

Active Choice and Financial Incentives to Increase Rates of Screening Colonoscopy-A Randomized Controlled Trial.

Behavioral economic approaches could increase uptake for colorectal cancer screening. We performed a randomized controlled trial of 2245 employees to determine whether an email containing a phone number for scheduling (control), an email with the active choice to opt in or opt out (active choice), or the active choice email plus a $100 incentive (financial incentive) increased colonoscopy completion within 3 months. Higher proportions of participants in the financial incentive group underwent screening (3.