An old but still burning problem: Inter-rater reliability in clinical trials with antidepressant medication.

Background: Antidepressant trials are criticized due to potential methodological flaws. Root causes of failing methodology can be found in insufficient inter-rater reliability (IRR) and training practices, leading to higher placebo response and reduced study-power. However, it is unknown to what extent reliability estimates or training procedures are currently included in antidepressant reports.