Acceptance and Commitment Therapy Group Intervention for Parents of Children with Disabilities (Navigator ACT): An Open Feasibility Trial.

There was no randomization or control group, so the study cannot show that Navigator ACT caused the observed changes. The outcome analysis was per protocol, not intention-to-treat, so it did not include all parents allocated to treatment. Some parents were also receiving ongoing counselling or psychoactive medication, and the study did not define or control for that counselling. The sample was mostly mothers and mostly parents of children with autism spectrum disorder, so results may not apply to fathers or families with other disabilities. The completer versus non-completer comparison was underpowered, so differences such as education and ongoing counselling may be unstable. Child outcomes were caregiver-reported behaviour difficulties and strengths, not speech, language, or motor performance.

The intervention was developed by Habilitation and Health, Region Stockholm, and Region Stockholm is also a listed funder. The study lists funding from Forskningsrådet om Hälsa, Arbetsliv och Välfärd; Region Stockholm fund for clinical research (ALF); Sveriges Kommuner och Landsting; Stiftelsen Clas Groschinskys Minnesfond; Svenska Frimurarorden; and Karolinska Institutet. The supplied text lists funders under funding and conflicts of interest but does not include individual author disclosures.

Do not read the improved parent anxiety, depression, and child difficulty scores as proof that Navigator ACT works. This was an uncontrolled feasibility study analysed only among parents who completed most sessions, and some parents were also receiving ongoing counselling or psychoactive medication, so the contribution of Navigator ACT alone cannot be separated.