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Table 1 Number of examiners that chose a diagnosis of aggressive or chronic periodontitis for each case report

From: Effect of patient age awareness on diagnostic agreement of chronic or aggressive periodontitis between clinicians; a pilot study

Case

Patient’s Age Excluded From Case Information

Patient’s Age Given with Case Information

Raters who Selected Aggressive Periodontitis

Raters who Selected Chronic Periodontitis

Raters who Selected Aggressive Periodontitis

Raters who Selected Chronic Periodontitis

1

15

1

16

0

2

16

0

16

0

3

0

16

1

15

4

3

13

0

16

5

2

14

9

7

6

10

6

11

5

7

7

9

15

1

8

8

8

11

5

9

0

16

0

16

Kappa

0.494; Moderate Agreement

0.611; Substantial Agreement

  1. The number of Board Certified Periodontists that chose a diagnosis of Aggressive or Chronic periodontitis was recorded for each case report. The cases were first presented with age withheld from case information and then a second time with age included. The agreement between examining periodontists diagnoses was calculated using the Kappa statistic and interpreted following Landis and Koch [11, 12]