1560-P: Unpacking Pathways Linking Familial Social Support to Parental Involvement in Type 1 Diabetes Care: A Mediation Analysis from a Behavioral Intervention Trial

Introduction and Objective: Caregiver involvement plays a critical role in adolescent T1D management, with collaborative parent involvement (CPI) associated with improved glycemic outcomes. This study tested whether maternal disengagement coping mediates the relationship between perceived family social support and CPI in adolescent diabetes management. Methods: We conducted a secondary data analysis of baseline data from a behavioral intervention trial for maternal caregivers of adolescents with T1D (n=151). Validated measures were used to assess perceived family support (MSPSS), and use of disengagement coping (RSQ). Child-reported CPI was the outcome variable. Mediation was tested using PROCESS Model 4 in SPSS v.29, controlling for the child’s age/race/sex, maternal education/marital status, and household income. Results: Perceived family support was significantly associated with reduced disengagement coping (p=.016), which in turn predicted greater collaborative parent involvement. The indirect effect of support on CPI through disengagement coping was significant (95% CI: [0.05, 0.87]). Conclusion: Disengagement coping appears to mediate the relationship between maternal social support and CPI, a factor associated with better HbA1c in youth with T1D. Findings support caregiver-focused interventions that bolster support networks and address coping to promote collaborative diabetes management. Disclosure M. Hall: None. T. McCarty: None. C. Davis: None. S. Jaser: Speaker's Bureau; Ended; Sanofi. Funding National Institutes of Health (R01DK115545)