Promised and Lottery Airtime Incentives to Improve Interactive Voice Response Survey Participation Among Adults in Bangladesh and Uganda: Randomized Controlled Trial.
Dustin Garrett GibsonGulam Muhammaed Al KibriaGeorge William PariyoSaifuddin AhmedJoseph AliAlain Bernard LabriqueIqbal Ansary KhanElizeus RutebemberwaMeerjady Sabrina FloraAdnan Ali HyderPublished in: Journal of medical Internet research (2022)
ClinicalTrials.gov NCT03773146; http://clinicaltrials.gov/ct2/show/NCT03773146.