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Table 1 Sensitivity, specificity, and precision, their respective 95% confidence intervals (95%CI), and number needed to read for the comparison between the search strategy under evaluation and the set of gold-standard articles

From: Validation of a search strategy for randomized clinical trials related to periodontitis

Indicator Value 95%IC
Sensitivity (%) 93.2 83.8–97.3
Specificity (%) 99.9 99.8–99.9
Precision (%) 77.5 66.5–85.6
NNR * (absolute value) 1.3
  1. * Number needed to read (NNR) = 1/ precision