Table 6 Confusion matrix for Cariescan measurements.

From: Reliability of impedance spectroscopy versus digital radiograph and ICDAS-II in occlusal caries detection: a prospective clinical trial

Parameter

ICDAS

CS

n (%)

χ2

p-value

Cohen’s kappa (95% CI)

Negative

Positive

Enamel caries

Negative

66 (81.48%)

15 (18.52%)

6.37

0.012*

0.509 (0.308:0.711)*

Positive

4 (20.00%)

16 (80.00%)

Dentinal caries

Negative

66 (81.48%)

15 (18.52%)

0.00

1

0.580 (0.446:0.715)*

Positive

15 (23.44%)

49 (76.56%)

Overall

Negative

66 (81.48%)

15 (18.52%)

0.47

0.493

0.588 (0.464:0.712)*

Positive

19 (22.62%)

65 (77.38%)

  1. CI confidence interval, *Significant (p < 0.05).
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