Combined ultrasound-guided cutting-needle biopsy and standard pleural biopsy for diagnosis of malignant pleural effusions

Table 4 Diagnostic accuracy of the 2 biopsy techniques according to the degree of pleural thickening in US scans

Pleural thickening	CNB (n = 156)		SPB (n = 160)		p-Value
Pleural thickening	No.	Accuracy (%)	No.	Accuracy (%)	p-Value
≥3 mm	57	49 (84.2)	57	47 (82.5)	0.607 (χ² = 0.264)
<3 mm	99	67 (67.6)	103	83 (80.6)	0.036 (χ² = 4.398)
p-Value		0.012 (χ² = 6.345)		0.771 (χ² = 0.085)

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