Strengths and limitations
insomnia
This was a process evaluation of, to the authors’ knowledge, the largest pragmatic clinical trial of psychological therapy for insomnia to date delivered in primary care. A limitation of this study is that the participants interviewed had mostly completed all four SRT sessions. The authors did, however, speak to one participant who left the intervention midway because of an underlying health condition. A better understanding of why people withdrew from the intervention might inform changes to the intervention and ongoing support, leading to better retention.