Recruitment and Participants

Cameroon and Peru participants may receive transport compensation, while Swiss participants receive no monetary compensation. Larger households were less likely to participate in the pilot. Higher education was associated with greater odds of participation. The planned sample was 6,000 adolescents across 64 schools. The enrolled pool exceeded the student threshold with more than 20,000 potential participants across 51 schools. Interview recruitment will use convenience sampling and aims for 12 interviews from a programme expected to include about 25-30 participants. Online survey recruitment will use self-selection sampling after each webinar. Consent rules varied by country, with France using passive consent and other countries requiring active written informed consent. The article cautions that the convenience sample likely overstates true participation rates. Recruitment in Cameroon and Peru initially draws from existing Leke and Laura citizen-science cohorts. Switzerland recruitment uses a new online campaign because Marie had not collected survey data at protocol time. The evaluation includes people living with dementia, informal caregivers, and healthcare professionals invol…