The Clinically Useful Depression Outcome Scale (CUDOS) is a brief, self-administered instrument that not only evaluates depressive symptoms but also both functioning and quality of life. The assessment of patients´ perspective may provide valuable information that could be lost if relaying only on clinician evaluation. The purpose of this study is to achieve a psychometric validation into Spanish of the CUDOS scale in patients with major depression disorder in a primary care setting.

Inclusion Criteria:

• Major depression disorder diagnosis according to Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR) criteria in the last 3 months
• Major depression disorder diagnosis according to Prime-MD criteria in the last 3 months

Exclusion Criteria:

• Be unable to understand and comply with the study requirements as judged by the investigator
• Participation in another trial prior to enrolment into this study

Primary care clinic