• 1 School of Nursing and Midwifery Amol, Mazandaran University of Medical Sciences, Sari, Iran
  • 2 Taylor's Business School, Taylor's University, Subang Jaya, Malaysia
  • 3 College of Science and Health, DePaul University, Chicago, IL, USA
  • 4 Tehran University of Medical Sciences, Tehran, Iran
  • 5 Modeling Research Center in Health, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Iran
  • 6 Biostatistics Unit, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
  • 7 Social Determinants of Health Research Center, Qazvin University of Medical Sciences, Iran
Omega (Westport), 2020 Feb;80(3):380-396.
PMID: 28982272 DOI: 10.1177/0030222817733220


This study aimed to evaluate the validity and reliability of the Persian version of Death Anxiety Scale-Extended (DAS-E). A total of 507 patients with end-stage renal disease completed the DAS-E. The factor structure of the scale was evaluated using exploratory factor analysis with an oblique rotation and confirmatory factor analysis. The content and construct validity of the DAS-E were assessed. Average variance extracted, maximum shared squared variance, and average shared squared variance were estimated to assess discriminant and convergent validity. Reliability was assessed using Cronbach's alpha coefficient (α = .839 and .831), composite reliability (CR = .845 and .832), Theta (θ = .893 and .867), and McDonald Omega (Ω = .796 and .743). The analysis indicated a two-factor solution. Reliability and discriminant validity of the factors was established. Findings revealed that the present scale was a valid and reliable instrument that can be used in assessment of death anxiety in Iranian patients with end-stage renal disease.

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