Affiliations: [a] Department of Ergonomics, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| [b] Department of Biostatistics, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
| [c] Center of Excellence for Occupational Health, Occupational Safety and Health Research Center, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
Correspondence:
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Address for correspondence: Omid Kalatpour, Center of Excellence for Occupational Health, Occupational Safety and Health Research Center, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran. Tel./Fax: +98 8138381645; E-mail: [email protected].
Abstract: BACKGROUND:Work-related fatigue can cause disruption in mental and physical activities of the workers. Considering the importance of recovery from fatigue in emergency services, as seen in firefighting duties, the preparation and validation of the Need For Recovery Scale (NFRS) questionnaire can be useful and effective. OBJECTIVE:This study assessed the reliability and validity of the Persian version of Need For Recovery Scale among industrial firefighters. METHODS:Need for recovery scale contains 11 questions. First, a questionnaire was translated using backward-forward method. Then, for measuring validity of the questionnaire, the opinions of 10 experts in related fields were obtained. Content Validity Index (CVI) and Content Validity Ratio (CVR) were calculated. The reliability was determined through 107 questionnaires completed by the industrial firefighters. RESULTS:The average age of the firefighters in this study was 37.5 years and they had an average of 10 years of work experience. The mean Need For Recovery Index from fatigue was 33.03 for the study population. Of the first 11 questions, 9 questions in the original NFRS showed a satisfactory level of CVR. The Content Validity Index and Cronbach’s α were 0.89 and 0.77 respectively. CONCLUSION:Based on the results, the Need For Recovery Scale is a reliable tool for assessing fatigue and revealed an acceptable level of validity and reliability that makes it usable for fatigue assessment in the industrial firefighters.
