568-P: Predictors of Engagement and Adherence in a Text Messaging Diabetes Intervention for Hispanics

Abstract

Mobile health delivery of diabetes self-management education and support (DSME/S) can reduce barriers among racial/ethnic minority populations (e.g., Hispanics) , but little is known about how participant characteristics shape adherence and engagement with mHealth interventions. The current study examined this using data from Dulce Digital-Me, a randomized trial that tested an adaptive mHealth DSME/S intervention among 3Hispanic adults with poorly managed type 2 diabetes from a Federally Qualified Health Center in San Diego, CA. In addition to core educational content, participants in three intervention arms received text messages with ecological momentary assessment (EMA) of health behaviors and prompts to check their blood glucose (BG) over 24 weeks. Linear regression models examined associations of age, sex, diabetes duration, health literacy (Single Item Literacy Scale) , and diabetes distress (Diabetes Distress Scale-17) at baseline with the percentage of EMA and BG checks completed, controlling for study arm. Average participant age was 52.6 years ± 11.5; 70% were female. Younger age (B=-.88) , longer diabetes duration (B=.51) , lower health literacy (B=-4.7) , and lower diabetes distress (B=-6.7) predicted significantly higher EMA completion, while only lower distress (B=-4.5) predicted higher BG check completion (all ps<.05) . Follow-up analyses revealed that those with moderate distress tended to have higher completion rates than those with low or high diabetes distress. Overall, these results were in line with prior research in predominantly non-Hispanic samples, with the exception of health literacy, where we typically see a positive association with mHealth engagement. This finding may reflect that our intervention content was written for populations of lower literacy levels. Future qualitative research should expand on these findings to explore who adheres to and engages most with mHealth DSME/S. Disclosure T.Clark: None. A.L.Fortmann: Consultant; Ascensia Diabetes Care, Employee; Dexcom, Inc. A.Philis-tsimikas: Advisory Panel; Bayer AG, Novo Nordisk, Research Support; Lilly Diabetes, National Institute of Diabetes and Digestive and Kidney Diseases, Novo Nordisk, Viking Therapeutics. K.L.Savin: None. H.Sandoval: None. S.R.Spierling bagsic: None. L.Gallo: None. Funding National Institutes of Health (NCT03130699)