title: Pain intensity, disability and depression in individuals with chronic back pain.
abstract: OBJECTIVE
  to measure the pain intensity, identify the disability and depression levels in people with chronic back pain and to correlate these variables. A cross-sectional, descriptive and exploratory study was undertaken at the Pain Treatment Clinic of the University of São Paulo at Ribeirão Preto Hospital das Clínicas, between February and June 2012, after receiving approval from the Ethics Committee at the University of São Paulo at Ribeirão Preto College of Nursing.
  
  
  METHODS
  sixty subjects with chronic back pain participated. The instruments used were: the 11-point Numerical Category Scale, the Roland-Morris Disability Questionnaire and the Beck Depression Inventory. To analyze the data, the arithmetic means, standard deviations and Spearman's correlation coefficient were calculated.
  
  
  RESULTS
  the findings show that the participants presented high pain, disability and depression levels. The correlation between pain intensity and disability and between pain intensity and depression was positive and weak and, between disability and depression, positive and moderate.
  
  
  CONCLUSIONS
  the study variables showed moderate and weak indices and the mutual correlations were positive.
authors.affiliation: aff1.
authors.forename: Márcia de Oliveira Sakamoto Silva
authors.initials: Mde O
authors.lastname: Garbi
authors.affiliation: Universidade Federal de São Carlos, São Carlos, SP, Brazil.
authors.forename: Priscilla
authors.initials: P
authors.lastname: Hortense
authors.affiliation: Universidade Paulista, Ribeirão Preto, SP, Brazil.
authors.forename: Rodrigo Ramon Falconi
authors.initials: RR
authors.lastname: Gomez
authors.affiliation: Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Talita de Cássia Raminelli
authors.initials: Tde C
authors.lastname: da Silva
authors.affiliation: Universidade Paulista, Ribeirão Preto, SP, Brazil.
authors.forename: Ana Carolina Ferreira
authors.initials: AC
authors.lastname: Castanho
authors.affiliation: Escola de Enfermagem de Ribeirão Preto, Universidade Paulista, Ribeirão Preto, SP, Brazil.
authors.forename: Fátima Aparecida Emm Faleiros
authors.initials: FA
authors.lastname: Sousa
mesh_terms: D000203:Activities of Daily Living; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001416:Back Pain / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology; D059350:Chronic Pain / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology; D003430:Cross-Sectional Studies; D003863:Depression / Q000209:etiology*; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D011795:Surveys and Questionnaires; D055815:Young Adult