Validity and Reliability of Clinical Dementia Rating Scale among the Elderly in Iran

authors:

avatar Nahid Sadeghi 1 , avatar Maryam Noroozian 2 , * , avatar Hassan Khalaji 3 , avatar Pouneh Mokhtari 4

Department of Physical Education and Sport Sciences, Faculty of Humanities, Islamic Azad University, Science and Research Branch, Tehran, Iran
Department of Neurology, Tehran University of Medical Sciences, Tehran, Iran
Department of Physical Education and Sport Sciences, Arak University, Arak, Iran
Department of Physical Education and Sport Sciences, Islamic Azad University of Tehran, Tehran, Iran

How To Cite Sadeghi N, Noroozian M, Khalaji H, Mokhtari P. Validity and Reliability of Clinical Dementia Rating Scale among the Elderly in Iran. Zahedan J Res Med Sci. 2012;14(10):e93192. 

Abstract

Background : The most common cause of dementia among the elderly is Alzheimer’s disease. Given the increasing population of the elderly, achieving a screening tool with high reliability and validity is an essential need for all communities. The main objective of the project was to determine the Persian version of Clinical Dementia Rating Scale (P-CDR1).
Materials and Methods : Twenty subjects were randomly selected from among 150, 50-70 year old people, who were illiterate and not mentally retarded, residing in the nursing home and they were given the Persian version of CDR scale (test). After three months, the group was given the test again.
Results : The findings showed that from the specialists’ standpoint CDR scale had acceptable validity, and the test validity was achieved 0.05 at the significant level with Cronbach’s alpha and reliability coefficients 73% and 89%, respectively.
Conclusion : CDR scale is a reliable instrument for evaluation of clinical dementia rating among the elderly in Iran. It can be used in screening dementia, Alzheimer, and diagnosis of the severity and stages of Alzheimer.

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