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Sleep Disorders
Volume 2014, Article ID 870320, 5 pages
Research Article

Prevalence of Sleep Disorders and Their Impacts on Occupational Performance: A Comparison between Shift Workers and Nonshift Workers

1Metabolic Disease Research Center, Qazvin University of Medical Sciences, Qazvin 34139-8-3731, Iran
2Occupational Sleep Research Center, Tehran University of Medical Sciences, Tehran 5583-1-4155, Iran
3Department of Occupational Medicine, Industrial Diseases Research Center, Shahid Sadoughi University of Medical Sciences, Yazd 89151-7-3143, Iran
4Social Determinants of Health Research Center, Qazvin University of Medical Sciences, Qazvin, Qazvin 34139-8-3731, Iran

Received 25 January 2014; Accepted 7 May 2014; Published 20 May 2014

Academic Editor: Liborio Parrino

Copyright © 2014 Zohreh Yazdi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Supplementary Material

Appendix 1: Occupational Impact of Sleep Questionnaire (OISQ)

Quality of sleep can influence our ability to perform in the workplace. The following questions relate to ways in which your work performance may have been affected by your sleep during the past week. Please Indicate (×) how often each item applied to you. Answer all the questions.

  1. Supplementary Material