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Table 1 Preoperative parameters and score calculation

From: May predictors of difficulty in thyroid surgery increase the incidence of complications? Prospective study with the proposal of a preoperative score

Sex Female 0
  Male 1
BMI (kg/m2) <  30 0
  ≥ 30 1
Neck length (cm) ≥ 6 cm 0
  <  6 cm 2
Neck extensibility (cm) Normal 0
  Reduced 2
Thyroid volume (ml) ≤ 80 ml 0
  >  80 ml 3
Hypervascularization No 0
  Yes 3
Thyroiditis No 0
  Yes 3
Score level Low 0–3
  Medium 4–5
  High 6–15