title: Antecedents of organizational citizenship behavior among Iranian nurses: a multicenter study.
abstract: BACKGROUND
  Organizational citizenship behavior (OCB) improves efficiency and employees' participation and generally provides a good ambiance. This study was conducted to determine the role of job satisfaction (JS), organizational commitment (OC) and procedural justice (PJ) in explaining OCB among nurses working in fifteen educational-treatment centers in Tehran-Iran, to provide guidelines for health care managers' further understanding of how to encourage citizenship behavior among nurses.
  
  
  METHODS
  In this multi-center descriptive-correlational study 373 nurses were evaluated through a Multi-stage cluster sampling method after obtaining approval from the Ethics Committee of Islamic Azad University, Tehran Medical Branch and Tehran University of Medical Sciences Research Deputy. Nurses who signed the informed consent and holding a bachelor or master degree, having a minimum one year of job experience and not having organizational management position during the questionnaire distribution were included in the study. In order to collect data, Demographic questionnaire, Podsakoff et al. (Leadersh Q 1(2):107-142, 1990) OCB questionnaire, OC questionnaire, Aelterman et al. (Educ Stud 33(3):285-297, 2007) JS questionnaire and PJ questionnaire were used. These questionnaires were translated into Persian and content validity was confirmed by an expert group; their reliability was calculated by the internal consistency Cronbach alpha coefficient and it was satisfied. Data were analyzed by descriptive statistics, Comparative mean tests, correlation coefficient and multiple-regression in the SPSS software version 11.
  
  
  RESULTS
  The general mean and all five aspects of OCB that ranked higher than 3 were evaluated in a "quite desired" state. The mean for perceived procedural justice, the general mean for JS and the mean of general grade for OC from the nurses' was in "quite desired" state. Finding from multiple regression indicated that OC and PJ exhibit about 19 % of OCB variance totally which is statistically significant (P < 0.01). JS had no significant impact on explaining OCB.
  
  
  CONCLUSIONS
  OC was the strongest predictor of nurses' OCB followed by perceived procedural justice. So, improving these factors can initiate better citizenship behavior among nurses.
authors.affiliation: School of Nursing and Midwifery, Islamic Azad University, Tehran Medical Sciences Branch, Tehran, Iran. Taghynejad@yahoo.com.|Department of Nursing, Farabi hospital, Tehran University of Medical Sciences (TUMS), Tehran, Iran. Taghynejad@yahoo.com.
authors.forename: Fakhredin
authors.initials: F
authors.lastname: Taghinezhad
authors.affiliation: Department of Nursing Management, School of Nursing and Midwifery, Islamic Azad University, Tehran Medical Sciences Branch, Tehran, Iran. msafavi@iautmu.ac.ir.
authors.forename: Mahboobe
authors.initials: M
authors.lastname: Safavi
authors.affiliation: School of Nursing and Midwifery, Tehran University of Medical Sciences, Tehran, Iran. a.raiesifar@gmail.com.
authors.forename: Afsaneh
authors.initials: A
authors.lastname: Raiesifar
authors.affiliation: School of Nursing and Midwifery, Islamic Azad University, Tehran Medical Sciences Branch, Tehran, Iran. shssn-yhyv@yahoo.com.
authors.forename: Sayed Hossein
authors.initials: SH
authors.lastname: Yahyavi
mesh_terms: D000704:Analysis of Variance; D003710:Demography; D005260:Female; D006801:Humans; D007492:Iran; D007588:Job Satisfaction; D008297:Male; D009726:Nurses / Q000458:organization & administration*; D012919:Social Behavior; D012935:Social Justice