4.

177组淋巴结CT及EBUS-TBNA诊断结果比较

The diagnostic results comparison between CT and EBUS-TBNA in 177 groups of lymph nodes

	Statistical results		χ2	P
	CT (%)	EBUS-TBNA(%)
a: fisher exact χ2 test.
Accuracy	78.53	96.05	22.91	< 0.001
Sensitivity	93.01	95.10	0.56	0.453
Specificity	17.65	100.00	44.26	< 0.001
Positive predictive value	82.61	100.00	24.12	< 0.001
Negative predictive value	37.50	82.93	-a	0.003