Trial Context
RECRUITMENT
The iDEAS trial aimed to evaluate the effectiveness of The original recruitment plan prepandemic was to place posters in NHS Primary Care services, but this has to be moved to web-based media when face-to-face appointments became remote appointments. Because recruitment occurred at this time, when many people were at home, people may have had more motivation and time to engage in deception.The 21-month trial recruitment period ran from July 13, 2020, to March 31, 2022, with a monthly target of 265 (total recruitment target, n=5562). Minimal advertising on Twitter (a tweet from the University and a promotion from the funder) occurred in July. The study began advertising on Facebook and Google in September 2020 (Figures S1 in After completing a baseline eligibility survey on Qualtrics, participants were randomized to 1 of 2 conditions (either the From the outset of recruitment, problems were experienced with participant deception. Enrollment decision tree.