control group

Improvements in long COVID symptoms, functional level and the impact of illness perceptions after concentrated micro-choice-based rehabilitation: A 1-year prospective uncontrolled study BACKGROUND Patients with long COVID face persisting physical and psychiatric symptoms. Illness perceptions...

Abstract Control conditions are the primary methodology used to reduce threats to internal validity in randomized controlled trials (RCTs). This meta-analysis examined the effects of control arm design and implementation on outcomes in RCTs examining psychological treatments for depression. A...

(Note that this is an old trial from 2001) Abstract Context: Use of nonpharmacological behavioral therapy has been suggested for treatment of chronic primary insomnia, but well-blinded, placebo-controlled trials demonstrating effective behavioral therapy for sleep-maintenance insomnia are...

A useful checklist for specifying the nature and intent of trial placebos alongside the TIDieR Template for Intervention Description and Replication https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1003294 One of the lead authors posted a Covid-related discussion here...