Baseline characteristics of participants by study group.
COVID-19-related workload increase, weight loss
In terms of feasibility, 35 out of 40 participants (88%, 95% CI = 0.78–0.98) completed the follow-up online surveys at Week 15. Among participants in the weight loss group, 22 out of 27 (82%) completed the 15-week intervention, and the average number of sessions attended was 10 (67%). Specifically, 5 participants attended the full 15 sessions, 8 attended 12–14 sessions, 5 attended 8–11 sessions, and 9 attended less than 8 sessions. Among the 14 participants who attended less than 12 weekly sessions, the common reasons for missed sessions included increased caregiver responsibility due to COVID, being too busy, work conflict (due to COVID), and illness. Adherence to the weight loss intervention was 48% (13 out of 27 participants attended at least 12 sessions). Among participants who dropped out of the weight loss intervention (n = 5, 19%), three were due to a COVID-19-related workload increase, one was due to a family loss, and one preferred a non-telephone-based approach. Among the 13 participants in the active control group, 2 (15%) were lost to follow-up.