Anxiety Symptom Trajectories Following AI-Powered Cognitive Behavioral Therapy in United Kingdom Primary Care: A Multilevel Growth Curve Analysis of the NHS Digital Wellbeing Programme
This prospective cohort study of 6,284 patients in UK primary care reveals that while AI-powered CBT significantly reduces anxiety symptoms on average, treatment response is heterogeneous across four distinct trajectory classes, with outcomes influenced by baseline severity, engagement, and a notable deprivation-related gap, ultimately supporting the platform's role as a scalable intervention in capacity-constrained areas.