Table 4. Agreement in risk level assignment on the basis of CRP obtained by immunoturbidimetry and the multi-array platform.

CRP		Multi-array platform						Multi-array platformrealigned to Immunoturbidimetry
	Level	<1 mg/l(%)	1–3 mg/l (%)	>3 mg/l(%)	Total(%)	Concordance(%)	κ	<1 mg/l(%)	1–3 mg/l (%)	>3 mg/l(%)	Total(%)	Concordance(%)	κ
Immunoturbidimetry	<1 mg/l	12.9	0.0	0.0	12.9		0.641	12.5	0.4	0.0	12.9		0.946
	1–3 mg/l	15.1	31.3	0.0	46.4			0.5	45.5	0.4	46.4
	>3 mg/l	0.0	8.2	32.5	40.7			0.0	2.0	38.7	40.7
	Total	28.0	39.5	32.5	100.0			13.1	47.8	39.1	100.0
						76.7						96.7
Immunoturbidimetry realigned to multi-array	<1 mg/l	26.0	0.4	0.0	26.4		0.931	–	–	–	–		–
	1–3 mg/l	2.0	37.6	0.7	40.4			–	–	–	–
	>3 mg/l	0.0	1.5	31.8	33.3			–	–	–	–
	Total	28.0	39.5	32.5	100.0			–	–	–	–
						95.4						–

κ, Cohen’s kappa (measure of agreement for categorical data); –, not applicable.