Influence of placebo effect in mental disorders research: A systematic review and meta-analysis.

Rodrigo Fernández-LópezBlanca Riquelme Gallego Bueno-Cavanillas AKhalid S Khan

Published in: European journal of clinical investigation (2022)

A small placebo effect was observed in mental disorders research overall, and in patients with anxiety or depression. These findings should be interpreted with caution in the light of heterogeneity and risk of bias.

Keyphrases

depressive symptoms
sleep quality
single cell
randomized controlled trial
physical activity