title: Responsiveness of the physical work performance evaluation, a functional capacity evaluation, in patients with low back pain.
abstract: OBJECTIVE
  The Physical Work Performance Evaluation (PWPE) is a functional capacity evaluation. This study investigated the responsiveness of the PWPE.
  
  
  METHODS
  The internal and external responsiveness was tested. For the internal responsiveness, the change in the pre-/post-test PWPE scores of a group participating in a work rehabilitation program (n = 27) was compared to that of a comparison group of healthy subjects (n = 30). The external responsiveness was tested with the rehabilitation group, and the change in their PWPE scores was compared to concurrent and empirical criteria.
  
  
  RESULTS
  The comparison of the change in pre-/post-test PWPE scores showed that the change for the rehabilitation group was significantly different from that for the comparison group, but only for one section of the PWPE. Changes in six criteria were seen after completion of the program, but there was no significant correlation between these changes and the change in the overall PWPE score.
  
  
  CONCLUSIONS
  The overall PWPE level of work score does not appear to have the ability to measure clinically significant changes achieved through a work rehabilitation program.
authors.affiliation: Department of Rehabilitation, Université de Sherbrooke, Longueuil, QC, Canada. marie-jose.durand@usherbrooke.ca
authors.forename: Marie-José
authors.initials: MJ
authors.lastname: Durand
authors.forename: Bruno
authors.initials: B
authors.lastname: Brassard
authors.forename: Quan Nha
authors.initials: QN
authors.lastname: Hong
authors.forename: Jacques
authors.initials: J
authors.lastname: Lemaire
authors.forename: Patrick
authors.initials: P
authors.lastname: Loisel
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007389:Internal-External Control; D017116:Low Back Pain / Q000503:physiopathology / Q000534:rehabilitation*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011594:Psychometrics / Q000295:instrumentation* / Q000379:methods; D012050:Rehabilitation, Vocational; D014938:Work Capacity Evaluation