title: Measuring psychosocial exposures: validation of the Persian of the copenhagen psychosocial questionnaire (COPSOQ).
abstract: BACKGROUND
  The effect of psychosocial work environment on personal and organizational aspects of employees is well-known; and it is of fundamental importance to have valid tools to evaluate them. This study aims to evaluate the reliability and validity of the Persian version of Copenhagen Psychosocial Questionnaire (COPSOQ).
  
  
  METHODS
  The questionnaire was translated into Persian and then back translated into English by two translators separately. The wording of the final Persian version was established by comparing the translated versions with the original questionnaire. One hundred three health care workers completed the questionnaire. Chronbach's alpha was calculated, and factor analysis was performed.
  
  
  RESULTS
  Factor analysis revealed acceptable validity for the five contexts of the questionnaire. Cronbach's alpha ranged from 0.73 to 0.82 in different contexts.
  
  
  CONCLUSIONS
  This study revealed that the Persian version of COPSOQ is a reliable and valid instrument for measuring psychosocial factors at work.
authors.affiliation: MD, MPH, PhD, Department of Community Medicine, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. pournik.o@iums.ac.ir.
authors.forename: Omid
authors.initials: O
authors.lastname: Pournik
authors.affiliation: MD, PhD, Mental Health Research Center, Iran University of Medical Sciences, Tehran, Iran. ghalichi.l@iums.ac.ir.
authors.forename: Leila
authors.initials: L
authors.lastname: Ghalichi
authors.affiliation: MD, MPH, PhD candidate, Medical Radiation Department, Faculty of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran. alireza_tehraniy@aut.ac.ir.
authors.forename: Alireza
authors.initials: A
authors.lastname: TehraniYazdi
authors.affiliation: MD, MPH, PhD candidate, Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran. mtjabali@yahoo.com.
authors.forename: Seyed Mohammad
authors.initials: SM
authors.lastname: Tabatabaee
authors.affiliation: MD, MPH, PhD, Department and Occupational Medicine Research Center, School of Medicine, Iran University of Medical Sciences, Tehran, Iran, & Occupational and Environmental Medicine, Department of Medical Sciences, Uppsala University Hospital, S-751 85 Uppsala, Sweden. mostafa.ghaffari@medsci.uu.se.
authors.forename: Mostafa
authors.initials: M
authors.lastname: Ghaffari
authors.affiliation: MD, PhD, Occupational and Environmental Medicine, Department of Medical Sciences, Uppsala University Hospital, S-751 85 Uppsala-Sweden. eva.vingard@medsci.uu.se.
authors.forename: Eva
authors.initials: E
authors.lastname: Vingard
keywords: Iran; Occupational Health; Psychosocial Work Environment; Reliability; Validity