Comparative Study of Clostridium difficile Clinical Detection Methods in Patients with Diarrhoea

Table 6

Comparison of the area under the ROC curve between the toxin detection methods of 79 specimens.

Method	Z value	value	Area under the curve
The toxigenic culture	1.426	0.1539	1.000
The GeneXpert C. difficile PCR assay			0.984
The toxigenic culture	3.000	0.0027	1.000
The VIDAS enzyme immunoassay			0.813