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Table 4 The discrimination performance measures of TV ≥ 581 mm3, RV ≥ 334 mm3 and TV ≥ 619 mm3 in both datasets

From: Sex estimation by volumetric evaluation of the maxillary canine using cone-beam computed tomographic images

Measures

Reference set

Validation set

TV ≥ 581

RV ≥ 334

TV ≥ 581

RV ≥ 334

TV ≥ 619

Ac

0.798 (0.729–0.856)

0.839 (0.775–0.891)

0.768 (0.662–0.854)

0.793 (0.689–0.874)

0.817 (0.716–0.894)

Se

0.762 (0.657–0.848)

0.810 (0.709–0.887)

0.765 (0.588–0.893)

0.824 (0.655–0.932)

0.706 (0.525–0.849)

Sp

0.833 (0.736–0.906)

0.869 (0.778–0.933)

0.771 (0.627–0.880)

0.771 (0.627–0.880)

0.896 (0.773–0.965)

PPV

0.821 (0.718–0.889)

0.861 (0.765–0.919)

0.703 (0.541–0.858)

0.718 (0.560–0.883)

0.828 (0.656–0.918)

NPV

0.778 (0.676–0.871)

0.820 (0.724–0.905)

0.822 (0.670–0.910)

0.860 (0.715–0.931)

0.811 (0.665–0.933)

LR+

4.57 (2.79–7.48)

6.18 (3.53–10.83)

3.34 (1.92–5.79)

3.59 (2.09–6.18)

6.78 (2.88–15.97)

LR-

0.29 (0.19–0.42)

0.22 (0.14–0.34)

0.31 (0.16–0.57)

0.23 (0.11–0.48)

0.33 (0.19–0.56)

  1. TV, tooth volume; RV, root volume; Se, sensitivity; Sp, specificity PPV, positive predictive value; NPV, negative predictive value; LR+, positive likelihood ratio; LR-, negative likelihood ratio; values are reported with 95% confidence intervals in the parenthesis.