Preliminary study of a scale measuring depression and somatic symptoms

Area of Science:

• Psychiatry
• Clinical Psychology
• Psychometrics

Background:

• Depression and somatic symptoms are significant clinical concerns.
• A culturally relevant and validated scale is needed for Taiwanese populations.
• Existing measures may not fully capture the symptom presentation in this demographic.

Purpose of the Study:

• To develop and validate a scale measuring depression and somatic symptoms.
• To select appropriate items for a Taiwanese sample.
• To assess the psychometric properties of the new scale.

Main Methods:

• A 44-item preliminary scale was administered to 102 Taiwanese outpatients with major depressive disorder.
• The Hamilton Depression Rating Scale was used for convergent validity assessment.
• Item selection was based on frequency, association with depression severity, and clinical relevance.

Main Results:

• The final Depression and Somatic Symptoms Scale (DSSS) consists of 12 depression and 10 somatic items.
• The DSSS demonstrated adequate internal consistency (Cronbach's alpha = .88 total, .78 Depression, .86 Somatic).
• Convergent validity was supported by a significant correlation with the Hamilton Depression Rating Scale (r = .59, p < .01).

Conclusions:

• The developed Depression and Somatic Symptoms Scale (DSSS) is a reliable and valid instrument for assessing depression and somatic symptoms in Taiwanese patients.
• Further research is needed to explore its structure, item characteristics, cultural applicability, and limitations in clinical settings.