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Reliability and validity of the Turkish version of the Hamilton Depression Rating Scale

A Akdemir1, M H Türkçapar, S D Orsel

  • 1Department of Psychiatry, SSK Ankara Training Hospital, Ankara, Turkey.

Comprehensive Psychiatry
|March 13, 2001
PubMed

Insights

The Turkish version of the Hamilton Depression Rating Scale (HDRS) demonstrates strong reliability and validity for assessing depression severity. This validated tool is suitable for clinical use in Turkish-speaking populations.

Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Psychometrics

Background:

  • Depression is a prevalent mood disorder requiring accurate assessment tools.
  • The Hamilton Depression Rating Scale (HDRS) is a widely used clinical measure for depression severity.
  • Validation of translated versions is crucial for international clinical research and practice.

Purpose of the Study:

  • To evaluate the reliability and validity of the Turkish adaptation of the Hamilton Depression Rating Scale (HDRS).
  • To confirm the suitability of the Turkish HDRS for assessing depression in a clinical population.

Main Methods:

  • Cross-sectional study involving 94 patients with major depression and 40 healthy controls.
  • Depression severity assessed using the Turkish HDRS, Beck Depression Inventory (BDI), and Clinical Global Impression (CGI) scale.
  • Reliability assessed via test-retest (5-day interval), internal consistency (Cronbach's alpha), split-half, and interrater reliability.
  • Validity examined through correlations with BDI and CGI, and Principal Components Analysis (PCA).

Main Results:

  • High test-retest reliability (r=.85), internal consistency (α=.75), and split-half reliability (r=.76).
  • Excellent interrater reliability coefficients ranging from .87 to .98.
  • Significant correlations observed between HDRS and BDI (.48) and HDRS and CGI (.56).
  • PCA identified six underlying factors for the HDRS.
  • A significant negative correlation (-.13) between patient and control groups confirmed HDRS's discriminative ability.

Conclusions:

  • The Turkish version of the HDRS is a reliable and valid instrument for assessing depression severity.
  • The findings support the use of the Turkish HDRS in clinical settings and research for Turkish-speaking individuals.
  • The scale effectively differentiates between individuals with and without depression.

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