Factor structure of the Hamilton Rating Scale for Depression in a cohort of community-dwelling elderly

Area of Science:

• Geriatric Psychiatry
• Psychometric Evaluation
• Clinical Psychology

Background:

• Depression is a significant concern in community-dwelling elderly populations.
• The Hamilton Rating Scale for Depression (HRS-D) is a widely used instrument for assessing depressive symptom severity.
• Understanding the factor structure of the HRS-D in older adults is crucial for accurate clinical assessment.

Purpose of the Study:

• To examine the factor structure of the 17-item Hamilton Rating Scale for Depression (HRS-D).
• To determine if the HRS-D exhibits a consistent factor structure in community-dwelling elderly patients.
• To validate the use of the HRS-D for assessing specific dimensions of depression in this demographic.

Main Methods:

• Principal components analysis was employed to analyze the factor structure.
• Quartimax rotation was utilized to aid in factor interpretation.
• The study included 206 community-dwelling elderly patients.

Main Results:

• A four-factor structure was identified, encompassing all 17 items of the HRS-D.
• These factors accounted for 57.7% of the total variance.
• The identified dimensions were: depressed affect, vegetative symptoms, anxiety, and agitation/insight.

Conclusions:

• The four-factor structure of the HRS-D accurately reflects depressive symptomatology in community-dwelling elderly.
• The findings support the clinical utility of the HRS-D for assessing major dimensions of depressive illness in older adults.
• This validated structure enhances the reliability of depression assessment in geriatric populations.