90SecondParent Wellbeing: Weekly Health Letters for Parents of Children With Developmental Disabilities

Parents of children with developmental disabilities (DD) consistently report significant psychological distress, a vulnerability amplified during the COVID-19 pandemic due to intensified caregiving demands and reduced access to formal supports. Scalable e-health interventions offer a promising alternative, yet programs specifically targeting the mental wellbeing of this parent population remain limited. This study aimed to examine the impact of the 90SecondParent Wellbeing e-health intervention on psychological wellbeing, parental wellbeing, and symptoms of depression and anxiety among parents of children with developmental disabilities. A two-arm randomized controlled trial of primary caregivers of children with developmental disabilities was conducted with a wait-list control group. The intervention consisted of 36 weekly health letters (the 90SecondParent Wellbeing program) that addressed child behaviour management, support strategies, and positive psychology principles. Outcomes, including psychological wellbeing (PWBS), parental wellbeing (PWS), depression (PHQ-9), and anxiety (GAD-7), were assessed across three time points ( baseline, immediately after intervention, and 1 month post-intervention (follow-up)).