1,051
Participants
Start Date
March 31, 2015
Primary Completion Date
December 31, 2015
Study Completion Date
July 31, 2016
Fixed financial incentive
"Participants receiving the fixed financial incentive intervention will be sent a screening appointment letter offering them a fixed amount of £10 if they attend their screening appointment."
Probabilistic financial incentive
"Participants receiving the probabilistic financial incentive intervention will be sent a screening appointment letter offering them an entry into a lottery with at least a 1 in 100 chance of winning £1000 if they attend their screening appointment."
Control
"Participants receiving the active comparator, (i.e. control) intervention, will be sent the standard diabetic retinopathy screening appointment letter."
National Health Service, United Kingdom
OTHER_GOV
Imperial College London
OTHER