Table 1.

K agreement calculation.

		Reviewer 2	Reviewer 2	Reviewer 2	Total
		Include	Exclude	Unsure
Reviewer 1	Include	4	0	0	4
Reviewer 1	Exclude	2	100	4	106
Reviewer 1	Unsure	0	7	13	20
	Total	6	107	17	130

Po = 0.9; Pe = 0.692; K agreement = 0.675 (<0, no agreement; 0.0–0.20, slight agreement; 0.21–0.40, fair agreement; 0.41–0.60, moderate agreement; 0.61–0.80, substantial agreement; 0.81–1.00, almost perfect agreement).