TABLE 1.

Contingency tables for sedimentation processing, double centrifugation processing, and liquid-solid double culture compared to liquid culture followed by molecular confirmation^a

Result of liquid culture and molecular confirmation	No. of samples
	Sedimentation processing		Double centrifugation processing		Liquid-solid double culture
	Positive	Negative	Positive	Negative	Positive	Negative
Positive	36	40	51	25	63	13
Negative	1	163	2	162	2	162

^aThe respective kappa coefficients were as follows: for sedimentation processing, 0.54; for double centrifugation processing, 0.72; and for liquid-solid double culture, 0.84.