title: Prevalence of fatigue and associated factors in chronic low back pain patients.
abstract: OBJECTIVE
  to determine the prevalence and key factors associated with fatigue in chronic low back pain patients.
  
  
  METHODS
  cross-sectional study of 215 chronic low back pain patients from three health care centers and two industrial corporations. The crude prevalence of fatigue and its 95% confidence interval (CI) were calculated. Associations between fatigue and the independent variables were measured.
  
  
  RESULTS
  the prevalence of fatigue among the participants was 26.0% [95% CI: 20.3-32.5]. Fatigue was independently associated with depression and self-efficacy. An increase of one unit in the score of depression increased the risk of fatigue by 9%; an increase of one unit in the score of self-efficacy reduced the risk of fatigue by 2%.
  
  
  CONCLUSIONS
  fatigue was prevalent in chronic low back pain patients and associated with depression and self-efficacy. Knowing these factors can direct strategies for prevention and control of fatigue in chronic low back pain patients.
authors: Departamento de Enfermagem, Faculdade de Ciências Medicas, Universidade Estadual de Campinas, Brazil. mgsalvetti@usp.br
authors: Marina de Góes
authors: Mde G
authors: Salvetti
authors: Cibele Andrucioli de Mattos
authors: CA
authors: Pimenta
authors: Patrícia Emília
authors: PE
authors: Braga
authors: Michael
authors: M
authors: McGillion
mesh_terms: D000328:Adult; D000368:Aged; D059350:Chronic Pain / Q000150:complications*; D003430:Cross-Sectional Studies; D005221:Fatigue / Q000453:epidemiology* / Q000209:etiology*; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000150:complications*; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012307:Risk Factors; D055815:Young Adult