title: Evidence-based consensus development and reduction of rate of endoscopic thoracic sympathectomy: a national study.
abstract: BACKGROUND
  Endoscopic thoracic sympathectomy (ETS) was overused for treating patients with hyperhidrosis in Taiwan.
  
  
  OBJECTIVE
  To determine whether use of evidence and a consensus-building exercise can reduce rates of surgery.
  
  
  METHODS
  We invited all surgeons in Taiwan who performed five or more ETSs per year for treating patients with hyperhidrosis to join this study. A structured questionnaire was mailed to surgeons asking about their management decisions based on clinical scenarios. Then we provided surgeons with evidence synopses and used the Delphi method to reach consensus. We analyzed healthcare utilization data during 2000 to 2005 and calculated total numbers of ETSs performed per 12 months to examine the effect on surgeons' behavior.
  
  
  RESULTS
  Of 155 surgeons invited, 61 (40%) completed this study. They agreed that observation or topical therapy was appropriate for patients with mild palmar hyperhidrosis, whereas ETS was appropriate for children, adolescents, and young and middle-aged adults who had severe symptoms. Surgeons became more willing to recommend botulinum toxin injection after we provided evidence synopses. We found a 52% reduction in mean total ETSs per 12 months in surgeons receiving evidence synopses. A higher percentage of reduction occurred in patients younger than 12 and aged 60 and older.
  
  
  CONCLUSIONS
  Evidence-based consensus development is helpful in decreasing overuse of ETS in treating patients with hyperhidrosis in Taiwan.
authors.affiliation: Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
authors.forename: Chia-Hsuin
authors.initials: CH
authors.lastname: Chang
authors.forename: Shih-Hung
authors.initials: SH
authors.lastname: Yang
authors.forename: Bor-Shen
authors.initials: BS
authors.lastname: Hsieh
authors.forename: K Arnold
authors.initials: KA
authors.lastname: Chan
mesh_terms: D000328:Adult; D019274:Botulinum Toxins, Type A / Q000008:administration & dosage; D032921:Consensus; D004724:Endoscopy; D019317:Evidence-Based Medicine; D006300:Health Services Misuse; D006801:Humans; D006945:Hyperhidrosis / Q000188:drug therapy / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D009465:Neuromuscular Agents / Q000008:administration & dosage; D011795:Surveys and Questionnaires; D013562:Sympathectomy / Q000379:methods / Q000706:statistics & numerical data*; D013624:Taiwan; D013900:Thoracic Nerves / Q000601:surgery*; D016896:Treatment Outcome
chemical_list: D009465:Neuromuscular Agents; D019274:Botulinum Toxins, Type A