title: Psychosocial work factors and sleep problems: findings from the French national SIP survey.
abstract: OBJECTIVE
  This study aimed at exploring the cross-sectional and prospective associations between psychosocial work factors and sleep problems.
  
  
  METHODS
  The study population consisted of a national representative sample of the French working population (SIP survey). The sample sizes were 7506 and 3555 for the cross-sectional and prospective analyses. Sleep problems were defined by either sleep disturbances or insufficient sleep duration at least several times a week. Psychosocial work factors included classical (job strain model factors) and emergent factors (recognition, insecurity, role/ethical conflict, emotional demands, work-life imbalance, etc.). Occupational factors related to working time/hours and physical work environment were also included as well as covariates related to factors outside work. Statistical analyses were performed using weighted Poisson regression analysis.
  
  
  RESULTS
  In the cross-sectional analyses, psychological demands, low social support, low recognition, emotional demands, perception of danger, work-life imbalance and night work were found to be associated with sleep problems. In the prospective analyses, psychological demands and night work were predictive of sleep problems. Using a less conservative method, more factors were found to be associated with sleep problems. Dose-response associations were observed, showing that the more frequent the exposure to these factors, the higher the risk of sleep problems. No effect of repeated exposure was found on sleep problems.
  
  
  CONCLUSIONS
  Classical and emergent psychosocial work factors were associated with sleep problems. More prospective studies and prevention policies may be needed.
authors.affiliation: Department of Social Epidemiology, Pierre Louis Institute of Epidemiology and Public Health, UMR_S 1136, INSERM, 75013, Paris, France.|Department of Social Epidemiology, Pierre Louis Institute of Epidemiology and Public Health, UPMC Univ Paris 06, UMR_S 1136, Sorbonne Universités, 75013, Paris, France.
authors.forename: Emilie
authors.initials: E
authors.lastname: Chazelle
authors.affiliation: Department of Social Epidemiology, Pierre Louis Institute of Epidemiology and Public Health, UMR_S 1136, INSERM, 75013, Paris, France.|Department of Social Epidemiology, Pierre Louis Institute of Epidemiology and Public Health, UPMC Univ Paris 06, UMR_S 1136, Sorbonne Universités, 75013, Paris, France.
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Chastang
authors.affiliation: Department of Social Epidemiology, Pierre Louis Institute of Epidemiology and Public Health, UMR_S 1136, INSERM, 75013, Paris, France. isabelle.niedhammer@inserm.fr.|Department of Social Epidemiology, Pierre Louis Institute of Epidemiology and Public Health, UPMC Univ Paris 06, UMR_S 1136, Sorbonne Universités, 75013, Paris, France. isabelle.niedhammer@inserm.fr.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Niedhammer
mesh_terms: D000328:Adult; D000368:Aged; D003430:Cross-Sectional Studies; D004644:Emotions; D005260:Female; D005602:France / Q000453:epidemiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000453:epidemiology* / Q000523:psychology; D015995:Prevalence; D011446:Prospective Studies; D012044:Regression Analysis; D012307:Risk Factors; D012893:Sleep Wake Disorders / Q000453:epidemiology* / Q000523:psychology; D012944:Social Support; D013315:Stress, Psychological / Q000453:epidemiology* / Q000523:psychology; D014940:Work Schedule Tolerance / Q000523:psychology; D016526:Workload / Q000523:psychology; D017132:Workplace / Q000523:psychology; D055815:Young Adult
keywords: Cross-sectional analyses; Dose–response associations; Insufficient sleep duration; Occupational factors; Prospective analyses; Psychosocial work factors; Sleep disturbances; Sleep problems