Recommendation 1: Conduct an Analysis of the Environment, the Target Population, and the Intervention

To avoid the recruitment “funnel effect” and obtain an accurate estimation of the pool of potential participants, it is important to conduct an analysis of the community/catchment area with respect to prevalence rates of the target population. This should be done in early phases of intervention development and might involve examining registries, census data, or data from previous trials. An analysis of the characteristics of the population should also be conducted. For example, questions related to the location of participants (e.g., “Do most of the participants live in locations remote to the study site?”), health literacy, and SES are important with respect to the design of recruitment efforts and materials. Finally, it is important to do an analysis of the intervention to have a clear understanding of essential inclusion/exclusion criteria, requirements associated with participation, and potential barriers to participation.

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