• Hamed Tavan, Waleyeh Menati, Arman Azadi, Kourosh Sayehmiri, and Ali Sahebi.
• Lecturer, Psychosocial Injuries Research Center, Ilam University of Medical Sciences , Ilam, Iran .
• J Clin Diagn Res. 2016 Aug 1; 10 (8): IC06-IC09.

IntroductionDespite the key role of Iranian nurses throughout disaster management, there is no instrument available to examine nurses' current disaster preparation levels.AimThe aim of this study was to develop and analyse the reliability and validity of a questionnaire on the nurses' knowledge, attitude and practice of disaster preparedness.Materials And MethodsThe scale was developed based on a comprehensive literature review and applied to 112 nurses in three public educational center affiliated to Ilam University of Medical Sciences, Ilam, Iran. Relibility was obtained using the test-retest method. Cronbach's alpha was used to verify internal consistency. Exploratory factor analysis was used to assess the validity of the questionnaire.ResultsExplanatory factor analysis using varimax rotation revealed seven main factors associated with the nurses' knowledge, attitude and practice regarding disaster preparedness. The questionnaire overall internal consistency using Cronbach's alpha was 0.785, showing acceptable internal consistency. The intraclass correlation coefficient using Test-retest method was 0.82. Total variance was 67.57%.ConclusionThe instrument has satisfactory reliability and validity indices and can be used to measure nurses' knowledge, attitude and practice regarding disaster preparedness.

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