Blinding in randomised clinical trials of psychological interventions: a retrospective study of published trial reports.
Sophie JuulChristian GluudSebastian SimonsenFrederik Weischer FrandsenIrving KirschJanus Christian JakobsenPublished in: BMJ evidence-based medicine (2020)
Blinding of key persons involved in randomised clinical trials of psychological interventions is rarely sufficiently documented. The possible interpretative limitations are only rarely considered. There is a need of randomised clinical trials of psychological interventions with documented blinding attempts of all possible key persons.