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Original Research



Validation of Gujarati version of 15-item Geriatric Depression scale in elderly medical outpatients of General hospital in Gujarat

Nimisha D Desai, Saurabh N Shah, Elavatsla Sharma, Amrita Mishra, Kedar Mehta.




Abstract

Background: Depressive disorders are a public health problem in developing countries. Access to valid and reliable screening tool is
needed to identify geriatric depression.

Aims & Objectives: To validate Gujarati version of geriatric depression scale -15 (GDS-15) as a screening instrument to identify geriatric Depression in elderly medical patients.

Materials and Methods: This is a hospital based cross -sectional study. 200 Gujarati elderly patients (>65 years) attending the medical out patients department, unaware about their mental health status, were selected and Gujarati GDS-15 was administered.
Then all patients were interviewed by a psychiatrist (blind to their GDS-15 scores). DSM-IV diagnostic criteria for major depression
were used. Various thresholds of the GDS-15 were compared against the standards of the DSM-IV. A Receiver operator characteristic
curve was drawn to obtain the best threshold value. Internal reliability of GDS-15 was assessed using Cronbach’s alpha reliability coefficients.

Results: 33.5% (67/200) elderly patients satisfied DSM-IV diagnostic criteria for Major Depression. The optimal threshold for the
GDS-15 was 7.5 with a sensitivity of 86.6% and a specificity of 73.3%. The area under the curve was 0.877. Cronbach’s alpha of the
total scores was 0.806.

Conclusion: The Gujarati GDS-15 has good properties as screening instruments for major depression in Gujarati elderly medical patients, as presented in our findings.

Key words: Geriatric Depression Scale-15 (GDS-15); Elderly; Validation; Depression






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