Table 4. Sensitivity and specificity of criteria for moderate-to-severe CTS.

	Sensitivity	Specificity	Accuracy	PPV	NPV
	(%)	(%)	(%)	(%)	(%)
3.22-CM	80	93	90	83	92
3.22-IM	47	97	83	88	82

CTS: carpal tunnel syndrome; CM: conventional method; IM: internal comparison method; PPV: positive predictive value; NPV: negative predictive value