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Table 1 Measurements comparison between TAD, CalTAD and TADcalTAD

From: Greater rate of cephalic screw mobilisation following proximal femoral nailing in hip fractures with a tip–apex distance (TAD) and a calcar referenced TAD greater than 25 mm

  Specificity Sensitivity PPV VPN
Estimate 95% CI Estimate 95% CI
TAD 0.59 0.42–0.76 1 0.22 1
CalTAD 0.492 0.32–0.66 1 0.18 1
TADcalTAD 0.541 0.37–0.71 1 0.2 1
  1. CI confidence interval, PPV positive predictive value, VPN negative predictive value