title: Predicting surgical outcome for pain relief and return to work.
abstract: BACKGROUND
  We evaluated a new psychological test (Paindex) for identifying and quantifying psychological factors associated with poor surgical outcome, and predicting the degree of pain relief and return to work.
  
  
  METHODS
  This test was administered to 120 randomly selected patients before carpal tunnel and laminectomy surgeries.
  
  
  RESULTS
  This test correctly predicted the probability of pain relief and return to work in 46 of the 50 laminectomy patients (92%), and 63 of the 70 carpal tunnel patients (90%). The overall test sensitivity was 86% and the specificity 94%.
  
  
  CONCLUSIONS
  These findings indicate that this can be a useful adjunctive test for identifying psychological problems that could have a bearing on the decision to operate and then problems that could occur after surgery, particularly in cases where the extent and degree of pain and disability are judged to be considerably in excess of the objective medical findings.
authors.affiliation: University of Colorado Health Sciences Center, Denver, USA.
authors.forename: C
authors.initials: C
authors.lastname: Hamlin
authors.forename: M
authors.initials: M
authors.lastname: Hitchcock
authors.forename: J
authors.initials: J
authors.lastname: Hofmeister
authors.forename: R
authors.initials: R
authors.lastname: Owens
mesh_terms: D000041:Absenteeism; D000328:Adult; D000465:Algorithms; D002349:Carpal Tunnel Syndrome / Q000601:surgery*; D005260:Female; D006801:Humans; D007796:Laminectomy / Q000009:adverse effects*; D008950:MMPI; D008297:Male; D017063:Outcome Assessment, Health Care; D010149:Postoperative Pain / Q000523:psychology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity