Reach and representativeness of ethnic minority women in the Health Is Power Study: a longitudinal analysis.

Reach is a key factor in translating research to practical application. This study examined reach and representativeness of a multi-city, randomized controlled community health trial in African American (AA) and Hispanic or Latina (HL) women. Participants completed measures of demographics, body mass index (BMI), percent body fat, resting heart rate, and blood pressure followed by a run-in procedure and a randomization meeting. AA were more likely to be screened out initially; HL were more likely to drop out. Participation did not differ by city or recruitment method. Women who completed the post-intervention assessment were more likely to be AA, older, and have higher socioeconomic status (p values < .05). This study showed moderate levels of reach but overrepresented higher educated, wealthier, and older women at the completion of the study. Representativeness can change over the course of the study and impact the practicality of translating research to practice.