The Association Between PHQ-9 and Fitness for Work Among Depressive Patients.

Objective: One of the tools to assess depression severity is the Patient Health Questionnaire (PHQ-9). Our aim was to investigate the correlation between PHQ-9 scores and fitness for work (FFW) in major depressive disorder (MDD).

Methods: A cross-sectional study in patients who were evaluated for their FFW and later compared with PHQ-9.