Recruitment and retention of under-represented groups with health disparities into clinical trials: a formative approach.

We evaluated the perceived success of recruitment and retention protocols for Native Hawaiian/Pacific Islander/Filipino populations. These three groups were found to have a significantly higher incidence of health disparities than the general population. Training applications of selected vignettes were also generated.

Use of the dietary supplement 5-aminiolevulinic acid (5-ALA) and its relationship with glucose levels and hemoglobin A1C among individuals with prediabetes.

Objective: This study examined the association between 5-aminolevulinic acid (5-ALA) and glucose tolerance.

Design: A double blinded, randomized prospective parallel-group comparison study.

Setting: Participants were recruited from the community in Honolulu, Hawaii, using radio and TV ads, and at community events.