Effects of pill-giving on maintenance of placebo response in patients with chronic mild depression

Am J Psychiatry. 1990 Dec;147(12):1622-6. doi: 10.1176/ajp.147.12.1622.

Abstract

Fifty outpatients with mild, chronic, mood-reactive depression whose mood improved markedly after a 10-day single-blind placebo trial were randomly assigned in a double-blind design either to have their placebo medication discontinued or to have it maintained for an additional 6 weeks. Half of the patients in each condition relapsed within 6 weeks, indicating that pill-taking itself does not influence maintenance of placebo response. Placebo response was more likely to be maintained in patients who were currently married. At the end of 3 months, the overall relapse rate was 58%. The authors raise questions about the utility of the initial 10-day placebo washout in antidepressant clinical trials, and they discuss limits on the generalizability of their findings.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adult
  • Age Factors
  • Ambulatory Care
  • Antidepressive Agents / therapeutic use
  • Depressive Disorder / diagnosis
  • Depressive Disorder / drug therapy*
  • Depressive Disorder / psychology
  • Educational Status
  • Female
  • Humans
  • Male
  • Marriage
  • Placebos / administration & dosage*
  • Placebos / therapeutic use
  • Psychiatric Status Rating Scales
  • Recurrence
  • Sex Factors
  • Single-Blind Method

Substances

  • Antidepressive Agents
  • Placebos