title: A prospective study predicting the outcome of chronic low back pain and physical therapy: the role of fear-avoidance beliefs and extraspinal pain.
abstract: OBJECTIVE
  To identify the prognostic factors for conventional physical therapy in patients with chronic low back pain (CLBP).
  
  
  METHODS
  Prospective observational study.
  
  
  METHODS
  One hundred thirteen patients with CLBP selected at the Spinal Disease Outpatient Clinic.
  
  
  METHODS
  Pain intensity was scored using the Numeric Rating Scale (NRS), and function was measured using the Roland-Morris Disability Questionnaire (RMDQ).
  
  
  RESULTS
  The Fear-Avoidance Beliefs Questionnaire work subscale results (FABQ-work; odds ratio [OR]=0.27, 95% confidence interval [CI] 0.13 to 0.56, p<0.001) and extraspinal pain (OR=0.35, 95% CI 0.17 to 0.74, p=0.006) were independently associated with a decreased response to conventional physical therapy for CLBP.
  
  
  CONCLUSIONS
  We identified high FABQ-work and extraspinal pain scores as key determinants of a worse response to physical therapy among CLBP patients, supporting the need for a special rehabilitation program for this subgroup.
authors.affiliation: Serviço de Reumatologia, Hospital das Clínicas, Universidade de São Paulo (USP), São Paulo, SP, Brasil.
authors.forename: Aloma S A
authors.initials: AS
authors.lastname: Feitosa
authors.affiliation: Serviço de Reumatologia, Hospital das Clínicas, Universidade de São Paulo (USP), São Paulo, SP, Brasil.
authors.forename: Jaqueline Barros
authors.initials: JB
authors.lastname: Lopes
authors.affiliation: Serviço de Reumatologia, Hospital das Clínicas, Universidade de São Paulo (USP), São Paulo, SP, Brasil.
authors.forename: Eloisa
authors.initials: E
authors.lastname: Bonfa
authors.affiliation: Serviço de Reumatologia, Hospital das Clínicas, Universidade de São Paulo (USP), São Paulo, SP, Brasil. Electronic address: ariradu@einstein.br.
authors.forename: Ari S R
authors.initials: AS
authors.lastname: Halpern
keywords: Chronic low back pain; Crenças de evitação e medo; Dor extraespinal; Extraspinal pain; Fear‐avoidance beliefs; Lombalgia crônica; Resposta terapêutica; Therapeutic response