title: Measuring perceived activity limitations in lower extremity Complex Regional Pain Syndrome type 1 (CRPS I): test-retest reliability of two questionnaires.
abstract: OBJECTIVE
  To assess the test-retest reliability of two questionnaires for measuring activity limitations in patients with Complex Regional Pain Syndrome type 1 (CRPS I) of the lower extremity.
  
  
  METHODS
  Patients filled out the Walking Stairs Questionnaire and the Questionnaire Rising and Sitting Down twice during a one-week period.
  
  
  METHODS
  Outpatient pain clinic of a university hospital.
  
  
  METHODS
  Twenty-one outpatients with CRPS I of the lower extremity.
  
  
  RESULTS
  The Walking Stairs Questionnaire and the Questionnaire Rising and Sitting Down were reliable in terms of test-retest reliability as expressed by Spearman's r (range 0.79-0.90 and 0.85-0.89 respectively) and the ICC (range 0.78-0.84 and 0.84-0.87 respectively).
  
  
  CONCLUSIONS
  Both questionnaires form a reliable tool for measuring activity limitations of patients with CRPS I of a lower extremity.
authors.affiliation: Department of Anesthesiology, University Hospital Vrije Universiteit, Amsterdam, The Netherlands. rsgm.perez@vumc.nl
authors.forename: Roberto S G M
authors.initials: RS
authors.lastname: Perez
authors.forename: Leo D
authors.initials: LD
authors.lastname: Roorda
authors.forename: Wouter W A
authors.initials: WW
authors.lastname: Zuurmond
authors.forename: Ilse I M J
authors.initials: II
authors.lastname: Bannink
authors.forename: Jan H
authors.initials: JH
authors.lastname: Vranken
authors.forename: Jaap J
authors.initials: JJ
authors.lastname: de Lange
mesh_terms: D000203:Activities of Daily Living; D000328:Adult; D000368:Aged; D001294:Attitude to Health; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D007866:Leg; D008124:Locomotion; D008297:Male; D008875:Middle Aged; D012019:Reflex Sympathetic Dystrophy / Q000503:physiopathology* / Q000523:psychology; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires