title: Association between sleep quality and quality of life in nursing professionals working rotating shifts.
abstract: OBJECTIVE
  To analyze the association between sleep quality and quality of life of nursing professionals according to their work schedules.
  
  
  METHODS
  A prospective, cross-sectional, observational study was conducted between January and December 2010, with 264 nursing professionals, drawn from 989 subjects at Botucatu General Hospital and stratified by professional category. The Pittsburg Sleep Quality Index and the WHOQOL-bref were administered to evaluate sleep quality and quality of life, respectively. Self-reported demographic data were collected with a standard form. Continuous variables were reported as means and standard deviations, and categorical variables were expressed as proportions. Associations were evaluated using Spearman's correlation coefficient. The association of night-shift work and gender with sleep disturbance was evaluated by logistic regression analysis using a model adjusted for age and considering sleep disturbance the dependent variable. The level of significance was p < 0.05.
  
  
  RESULTS
  Night-shift work was associated with severe worsening of at least one component of sleep quality in the model adjusted for age (OR = 1.91; 95%CI 1.04;3.50; p = 0.036). Female gender was associated with sleep disturbance (OR = 3.40; 95%CI 1.37;8.40; p = 0.008). Quality of life and quality of sleep were closely correlated (R = -0.56; p < 0.001).
  
  
  CONCLUSIONS
  Characteristics of the nursing profession affect sleep quality and quality of life, and these two variables are associated.
authors.affiliation: Departamento de Enfermagem, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista ?Júlio de Mesquita Filho?, Botucatu, SP, Brasil.
authors.forename: Valéria de Castilho
authors.initials: Vde C
authors.lastname: Palhares
authors.affiliation: Departamento de Estatística, Instituto de Biociências, Universidade Estadual Paulista ?Júlio de Mesquita Filho?, Botucatu, SP, Brasil.
authors.forename: José Eduardo
authors.initials: JE
authors.lastname: Corrente
authors.affiliation: Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista ?Júlio de Mesquita Filho?, Botucatu, SP, Brasil.
authors.forename: Beatriz Bojikian
authors.initials: BB
authors.lastname: Matsubara
mesh_terms: D000328:Adult; D001291:Attitude of Health Personnel; D001938:Brazil / Q000453:epidemiology; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D009741:Nursing Staff, Hospital; D009784:Occupational Diseases / Q000453:epidemiology / Q000209:etiology / Q000523:psychology; D016272:Occupational Health; D011446:Prospective Studies; D011788:Quality of Life; D012307:Risk Factors; D012737:Sex Factors; D012892:Sleep Deprivation / Q000453:epidemiology / Q000209:etiology / Q000523:psychology; D020178:Sleep Disorders, Circadian Rhythm / Q000453:epidemiology / Q000209:etiology / Q000523:psychology; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires