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Table 2 Sensitivity, specificity, accuracy, false positives, and false negatives by evaluator 1, 2 and 3 in relation to VRF occurrence

From: Detection of vertical root fractures in endodontically treated teeth in the absence and in the presence of metal post by cone-beam computed tomography

Evaluator

Group

Sensitivity

Specificity

Accuracy

False positive

False negative

  

n

%

n

%

n

%

n

%

n

%

1

• Nonfilled

7

87.5

6

75.0

13

81.2

2

25

1

12.5

 

• Gutta-percha

5

62.5

7

87.5

12

75.0

1

12.5

3

37.5

 

• Post

6

75.0

3

37.5

9

56.3

5

62.5

2

25

 

P value

p = 0.837

p = 0.162

p = 0.375

    

2

• Nonfilled

8

100

7

87.5

15

93.8

1

12.5

- -

 

• Gutta-percha

5

62.5

6

75

11

68.8

2

25

3

37.5

 

• Post

6

75.0

2

25

8

50

6

75

2

25

 

P value

p = 0.304

p = 0.056

p = 0.030

    

3

• Nonfilled

7

87.5

7

87.5

14

87.5

1

12.5

1

12.5

 

• Gutta-percha

6

75

7

87.5

13

81.3

1

12.5

2

25

 

• Post

5

62.5

3

37.5

8

50

5

62.5

3

37.5

 

P value

p = 0.837

p = 0.062

p = 0.075