Table 4:

A comparison of yields per station of CUS and CUSb techniques

Diagnostic yield per station/zone	Right paratracheal stations 2R/4R			Subcarinal station (7)			Left paratracheal stations 2L/4L
Bioptic technique	CUS	CUSb	P > 0.05 (ns)	CUS	CUSb	P > 0.05 (ns)	CUS	CUSb	P > 0.05 (ns)
Sensitivity	97.6	92.7	ns	98.8	95.1	ns	98.3	98.2	ns
Specificity	100	93.3	ns	98.0	100	ns	100	96.3	ns
Accuracy	98.5	93.0	ns	98.5	96.8	ns	98.9	97.6	ns
PPV	100	95.0	ns	98.8	100	ns	100	98.2	ns
NPV	96.3	90.3	ns	98.0	91.3	ns	96.5	96.3	ns

ns: not significant.