Taking into account the specific challenges of the planned study, which included significant participant burden due to our two-phase approach, we developed a recruitment strategy that identified domains and subdomains of barriers to participation in clinical research. As the study progressed, we identified the levels at which these barriers occurred. The primacy of the barrier domains overlap and changed from neighborhood to neighborhood and thus should not be considered as distinct groups. It is noteworthy that the analyses of the solutions for the barriers were a continuing fluid assessment of the study from participants’ perspectives.
