Compensation for opportunity costs
No incentives were provided to participants during engagement meetings with community members. However, stakeholders advised that because forest workers had to travel long distances, usually on foot, and had to wait while trial staff were performing the research procedures e.g. obtaining written informed consent, data and sample collection, compensation was considered appropriate on enrolment and follow-up visits. Hence, on each of these visits, 5 US dollars were provided to each participant to compensate for loss of income. No incentive was provided to the participants to take the trial medication during forest visits, and the post forest period. Group leaders of forest goers received 50 US dollars to directly observe the self-administration of the trial medication for a maximum period of 4 months, to guide the team members for follow-up visits, and to complete and maintain the drug administration record.