• 1 School of Nursing and Midwifery Amol, Mazandaran University of Medical Sciences, Sari, Iran
  • 2 Senior Lecturer, Taylor's Business School, Taylor's University Malaysia, Subang Jaya, Malaysia
  • 3 Michigan State University College of Nursing, Michigan, USA
  • 4 The Melbourne Graduate School of Education, The University of Melbourne, Melbourne, Australia
  • 5 Nursing, Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
  • 6 Master in Geriatric Nursing, Tehran University of Medical Sciences, Tehran, Iran
  • 7 Social Determinants of Health Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
Iran J Psychiatry, 2017 Jul;12(3):172-181.
PMID: 29062368


Objective: Limited research has examined the psychometric properties of death depression scales in Persian populations with cardiac disease despite the need for valid assessment tools for evaluating depressive symptoms in patients with life-limiting chronic conditions. The present study aimed at evaluating the reliability and validity of the Persian Version of Death Depression Scale - Revised (DDS-R) in Iranian patients who had recent acute myocardial infarction (AMI). Method: This psychometric study was conducted with a convenience sample of 407 patients with AMI diagnosis who completed the Persian version of the DDS-R. The face, content, and construct validity of the scale were ascertained. Internal consistency, test-retest, and construct reliability (CR) were used to assess reliability of the Persian Version of DDS-R. Results: Based on maximum likelihood exploratory factor analysis and consideration of conceptual meaning, a 4-factor solution was identified, explaining 75.89% of the total variance. Goodness-of-fit indices (GFI), Comparative Fit Index (CFI), Normed Fit Index (NFI), Incremental Fit Index (IFI), and Root Mean Square Error of Approximation (RMSEA) in the final DDS-R structure demonstrated the adequacy of the 4-domain structure. The internal consistency, construct reliability, and Intra-class Correlation Coefficients (ICC) were greater than .70. Conclusion: The DDS-R was found to be a valid and reliable assessment tool for evaluating death depression symptoms in Iranian patients with AMI.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.