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Table 4 Prioritization scoring systems

From: Explicit criteria for prioritization of cataract surgery

   Weights for each category
Variable Category Optimal scaling General linear model
Visual acuity = 0.1 21 25
  0.2–0.4 15 17
  ≥ 0.5 0 0
Expected visual acuity = 0.1 0 0
  0.2–0.4 13 18
  ≥ 0.5 21 29
Visual function Unimpaired 0 0
  Glare 4 5
  Recreational difficulties 10 11
  Daily living difficulties 20 20
Contralateral visual acuity =.1 10 7
  0.2–0.4 6 5
  ≥ 0.5 0 0
Ocular comorbidities Simple cataract 8 6
  Diabetic retinopathy 4 3
  Other pathologies 0 0
Social dependence Yes 5 3
  No 0 0
Laterality Unilateral 0 0
  Bilateral 2 1
Appropriateness Appropriate 13 9
  Uncertain 0 0
  1. Scoring estimation: the sum of the score of the corresponding category of each of the eight variables. Final score can range from 0 to 100, the higher the score the higher the priority.