Table 2.

Diagnostic Accuracy Between the Definitions by the Japanese Society of Internal Medicine and the Rome III Criteria

	Sensitivity	Specificity	Accuracy	PPV	NPV
JSIM	0.292	0.975	0.781	0.823	0.776
Rome III	0.522	0.815	0.732	0.529	0.811

PPV, positive predictive value; NPV, negative predictive value; JSIM, the Japanese Society of Internal Medicine.