Systematic review: The placebo effect of psychological interventions in the treatment of irritable bowel syndrome

To determine the placebo response rate associated with different types of placebo interventions used in psychological intervention studies for irritable bowel syndrome.Randomized controlled trials comparing psychological interventions (stress management/relaxation therapy (cognitive) behavioral therapy, short-term psychodynamic therapy, and hypnotherapy) for the treatment of adult patients with irritable bowel syndrome (IBS) diagnosed with the...