Validating the Structure of the Depression and Somatic Symptoms Scale

Area of Science:

• Psychiatry
• Clinical Psychology
• Health Services Research

Background:

• Depression in primary care often manifests with somatic symptoms, complicating diagnosis.
• Clinicians require validated instruments to assess this comorbidity effectively.

Purpose of the Study:

• To evaluate the psychometric properties of the translated Chinese Depression and Somatic Symptoms Scale (DSSS) in a US population.
• To establish the reliability and validity of the DSSS for assessing depression and somatic symptoms.

Main Methods:

• A diverse sample of 491 symptomatic individuals completed the DSSS and the Center for Epidemiologic Studies Depression Scale (CES-D).
• Psychometric evaluation included factor analysis, internal consistency, reliability, and convergent validity assessments.

Main Results:

• Factor analysis confirmed two distinct factors: depression and somatic symptoms.
• The DSSS and its subscales demonstrated strong internal consistency, reliability, and convergent validity with the CES-D.
• The scale proved trustworthy for use in US populations.

Conclusions:

• The DSSS is a psychometrically sound instrument for assessing depression and somatic symptoms in US populations.
• Clinical implementation of the DSSS can improve patient assessment, diagnosis, and intervention planning for individuals experiencing these conditions.