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Table 1 Definitions of Sensitivity, Precision and Specificity

From: Identifying observational studies of surgical interventions in MEDLINE and EMBASE

  

Manual review of subject only electronic search

  

Non-randomised studies (Reference standard)

Other studies (Non-reference standard)

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Retrieved

A

B

 

Not retrieved

C

D

  1. Sensitivity = A/(A+C) × 100
  2. Precision = A/(A+B) × 100
  3. Specificity = D/(B+D) × 100