The first wave of data collection had 4,424 students from 30 Junior Secondary Schools complete questionnaires, the third wave had 5,201. The increase in enrolment between the two waves may be due to educational reforms by the new governor of Edo State, including fee waivers, improvement in educational infrastructure and reposting of teachers to rural areas. Surveys were scanned using SNAP software25 with trained project staff and one of the co-principal investigators checking for inconsistencies and potential errors.