title: The prioritization of patients on waiting lists for cataract surgery: validation of the Western Canada waiting list project cataract priority criteria tool.
abstract: OBJECTIVE
  To assess the validity of the Cataract Priority Criteria Score (PCS), developed by the Western Canada Waiting List (WCWL) Project to determine patient prioritization for cataract surgery.
  
  
  METHODS
  Ophthalmologists assessed consecutive patients with the PCS and a visual analogue scale of urgency (VAS Urgency). Patients were mailed questionnaires pre- and post-surgery. Outcome measures were the Visual Function Assessment (VFA), EuroQol (EQ-5D), and best-corrected visual acuity.
  
  
  RESULTS
  The sample of 253 patients was 58% female (mean age, 73.7 years); 166 completed pre-and post-surgery VFA. The correlation of the PCS and VAS Urgency was 0.65 (p = 0.000). Adjusting for age, first or second eye surgery, and post-operative complication, the PCS predicted improvement in the VFA and visual acuity (p < .05).
  
  
  CONCLUSIONS
  These data provide some evidence to support the convergent and predictive validity of the PCS. Multiple patient outcomes should be used in the evaluation of the validity of priority scores.
authors: Western Canada Waiting List Project and the University of Calgary, Canada.
authors: Barbara L
authors: BL
authors: Conner-Spady
authors: Suren
authors: S
authors: Sanmugasunderam
authors: Paul
authors: P
authors: Courtright
authors: Drew
authors: D
authors: Mildon
authors: John J
authors: JJ
authors: McGurran
authors: Tom W
authors: TW
authors: Noseworthy
mesh_terms: D000368:Aged; D001955:British Columbia; D002386:Cataract / Q000145:classification / Q000175:diagnosis; D002387:Cataract Extraction / Q000592:standards*; D017558:Elective Surgical Procedures / Q000592:standards*; D005260:Female; D015276:Health Care Rationing; D006292:Health Priorities / Q000592:standards*; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D018579:Patient Selection; D011795:Surveys and Questionnaires; D014792:Visual Acuity; D014850:Waiting Lists