Digital Storytelling Intervention for Hemoglobin A<sub>1c</sub> Control Among Hispanic Adults With Type 2 Diabetes
Authors: Mark L. Wieland, Katherine Diaz Vickery, Valentina Hernandez, Becky R. Ford, Crystal Gonzalez, Silvio Kavistan, Sheila Iteghete, Christi A. Patten, Jane W. Njeru, Abby M. Lohr, Jamie O’Byrne, Paul J. Novotny, Davinder P. Singh, Linda K. Larkey, Miriam Goodson, Graciela Porraz Capetillo, Irene G. Sia
Journal: JAMA Network Open (2024)

Importance Hispanic adults with type 2 diabetes (T2D) are more likely to develop complications and die from the disease than the US general population. Digital storytelling interventions are narrative-based videos elicited through a community-based participatory research approach to surface the authentic voices of participants overcoming obstacles to health-promoting behaviors that perpetuate health inequities; research on the effect of digital storytelling on T2D outcomes among Hispanic adults is lacking. Objective To assess the impact of a digital storytelling intervention on glycemic control and its acceptability among Hispanic patients with poorly controlled T2D. Design, Setting, and Participants This was a multicenter, randomized clinical trial conducted within 2 primary care networks in Minnesota and Arizona among Hispanic adults with poorly controlled T2D (hemoglobin A 1c level ≥8%). Enrollment and follow-up were conducted between February 14, 2019, and November 1, 2023. Intervention The intervention group viewed a 12-minute digital storytelling video. The video included 4 Spanish-language stories that reinforced 4 diabetes self-management behavioral goals (healthful diet for diabetes, physical activity, medication adherence, and glucose self-monitoring). The control group received printed, culturally tailored T2D education materials. Main Outcomes and Measures The primary outcome was the mean change from baseline to 3 months for hemoglobin A 1c levels, adjusting for baseline hemoglobin A 1c , age, gender, education, and income. Acceptability and narrative quality of the intervention were assessed through questionnaires. Results There were 451 study participants, with 227 (mean [SD] age, 54.3 [9.3] years; 158 [69.3%] women) randomized to the intervention group and 224 (mean [SD] age, 54.5 [9.1] years; 156 [69.3%] women) to the control group. Of these, 390 completed 3-month follow-up of the primary outcome (86% retention). There was a small improvement in the mean (SD) hemoglobin A 1c level in the intervention group compared with the control group in the adjusted model (9.1% [1.7] to 8.4% [1.6] vs 9.4% [1.8] to 8.8% [2.0]; P = .04] but not in the unadjusted model. Acceptability and narrative quality of the intervention were high. Conclusions and Relevance In this randomized clinical trial, a digital storytelling intervention developed with and for Hispanic adults with T2D was highly acceptable and feasibly implemented within primary care settings and resulted in a modest improvement of glycemic control. This was a highly scalable intervention that may be integrated into clinical practice as part of a longitudinal diabetes self-management program for Hispanic adults. Trial Registration ClinicalTrials.gov Identifier: NCT03766438