Prioritizing Parental Worry Associated with Duchenne Muscular Dystrophy Using Best-Worst Scaling

Duchenne muscular dystrophy (DMD) is a progressive, fatal pediatric disorder with significant burden on parents. Assessing disease impact can inform clinical interventions. Best-worst scaling (BWS) was used to elicit parental priorities among 16 short-term, DMD-related worries identified through community engagement. Respondents viewed 16 subsets of worries, identified using a balanced, incomplete block design, and identified the most and least worrying items. Priorities were assessed using best-worst scores (spanning +1 to ?1) representing the relative number of times items were endorsed as most and least worrying. Independent-sample t-tests compared prioritization of parents with ambulatory and non-ambulatory children. Participants (n?=?119) most prioritized worries about weakness progression (BW score?=?0.64) and getting the right care over time (BW?=?0.25). Compared to parents of non-ambulatory children, parents of ambulatory children more highly prioritized missing treatments (BW?=?0.31 vs. 0.13, p?<?0.001) and being a good enough parent (BW?=?0.06 vs. ?0.08, p?=?0.010), and less prioritized child feeling like a burden (BW?=??0.24 vs. ?0.07, p?<?0.001). Regardless of child’s disease stage, caregiver interventions should address the emotional impact of caring for a child with a progressive, fatal disease. We demonstrate an accessible, clinically-relevant approach to prioritize disease impact using BWS, which offers an alternative to the use of traditional rating/ranking scales.