Long-term clinical and cost-effectiveness of a therapist-supported online remote behavioural intervention for tics in children and adolescents : extended 12- and 18-month follow-up of a single-blind randomised controlled trial
Background: Little is known about the long-term effectiveness of behavioural therapy for tics. We aimed to assess the long-term clinical and cost-effectiveness of online therapist-supported exposure and response prevention (ERP) therapy for tics 12 and 18 months after treatment initiation. Methods: ORBIT (online remote behavioural intervention for tics) was a two-arm (1:1 ratio), superiority, sing