Feasibility of acceptance and commitment therapy for repetitive negative thinking versus internet-based CBT: a pilot randomised controlled trial in Swedish primary care among patients with anxiety, depression and stress

Abstract Background Repetitive negative thinking (RNT) is a transdiagnostic process relevant to common mental health problems in primary care. RNT-ACT is a brief acceptance and commitment therapy-based protocol targeting RNT in two sessions. This pilot study assessed the feasibility of RNT-ACT compared with therapist-supported internet-based cognitive behavioural therapy (iCBT) in Swedish primary care. Methods Thirteen participants were randomised: 7 to RNT-ACT and 6 to iCBT. The primary feasibility outcomes were recruitment rate, intervention non-completion, and patient satisfaction measured