Implementation Fidelity and Theory-Informed Dose Effects of a Teen Pregnancy Prevention Program for Native American Youth

In 2019, Native youth had the highest rate of teen pregnancy of all racial/ethnic groups. “Respecting the Circle of Life” (RCL) is one of the first evidence-based teen pregnancy prevention programs for Native teens and there is interest in replicating the program across tribal communities. To inform replication, it is important to consider process data including quality, fidelity, and dosage as these may all moderate impact of the program. Participants were Native youth aged 11–19 and a trusted adult. This study includes participants randomized to the RCL program only (N = 266). Data sources include independent observations, facilitator self-assessments, attendance logs, and self-report assessments completed by enrolled youth at baseline and 3 months post assessment. Data was compiled and summed by cohort. Dosage was number of minutes participating in activities separated by theoretical constructs. Linear regression models were utilized to assess moderation of the effects of the intervention dosage on outcomes of interest. Eighteen facilitators delivered RCL. One hundred eighteen independent observations and 320 facilitator self-assessments were collected and entered. Findings indicate RCL was implemented with high fidelity and quality (4.40 to 4.82 out of a 5-point Likert scale; 96.6% of planned activities completed). Dosage was high with an average completion of 7 out of 9 lessons. There was no association between theoretical construct dosage and outcomes of interest. Overall, this study indicates RCL was delivered with high fidelity, quality, and dosage in this trial. This paper informs future replication of RCL and provides support for hiring paraprofessionals from the local community as facilitators, delivering the RCL to peer groups of the same age and sex, delivering the RCL with short duration and high frequency, and encouraging youth to attend all RCL lessons, but continue to serve youth who have missed one or more lessons.