British Medical JournalResponse to Acute Monotherapy for Major Depressive Disorder in Randomized, Placebo Controlled Trials Submitted to the US Food and Drug Administration: Individual Participant Data Analysis

Study: This meta-analysis includes 232 randomized, double-blind, placebo-controlled trials of drug monotherapy for major depressive disorder submitted to the FDA between 1979 and 2016, and comprises nearly 75,000 adult and child participants.

Conclusion: Patients with depression are likely to improve substantially from acute treatment of their depression with drug or placebo. Although the mean effect of antidepressants is only a small improvement over placebo, the effect of active drug seems to increase the probability that any patient will benefit substantially from treatment by about 15%.