The below figure depicts the estimated uptake of programmes across different incentive amounts. The solid line indicates the estimated uptake for the most preferred programme design: a programme offering cash rewards of a consistent amount for verified abstinence, with sessions provided once per week in a healthcare centre.
Use the drop-down menus to change the programme design. The dashed line will show the trade off in uptake produced by changing elements of the design.
A detailed description of the larger study can be found here: https://doi.org/10.1093/ntr/ntac042