Radiographic and Clinical Findings of Single-Visit Root Canal Treatments with Apical Enlargement in Necrotic Teeth: A Retrospective Cohort Study

Table 2

Interexaminer (E.E. versus K.O.) and intraexaminer (1 versus 2) Cohen’s kappa values according to the PAI scores that were recorded from the same radiographs with a 2-month interval.

PAI	Intraexaminer		Interexaminer
	E.E.1-E.E.2	K.O.1-K.O.2	E.E.1-K. O.1	E.E.2-K.O.2
	(%)	(%)	(%)	(%)
1	23 (23.2)	22 (22.4)	22 (23.2)	22 (22.4)
2	24 (24.2)	26 (26.5)	24 (25.3)	24 (24.5)
3	19 (19.2)	18 (18.5)	18 (18.9)	18 (18.4)
4	20 (20.2)	20 (20.4)	19 (20)	22 (22.4)
5	12 (12.1)	12 (12.2)	12 (12.6)	12 (12.2)
Cohen’s kappa	0.987	0.974	0.936	0.987
value

. PAI: periapical index.