Identifying the concepts contained in outcome measures of clinical trials on depressive disorders using the International Classification of Functioning, Disability and Health as a reference.

Objectives: First, to systematically identify the concepts contained in outcome measures of trials on depressive disorders using the International Classification of Functioning, Disability and Health (ICF) as a reference. Secondly, to explore differences in the use of ICF categories across different intervention types. Thirdly, to examine which and how often health status measures have been applied in trials on depressive disorders.