Table 2.

Subgroup analysis for CNB and FNA.

		Diagnostic Accuracy	Sensitivity	Specificity
CNB	Group 1	94.7 (36/38)	94.1 (32/34)	100 (4/4)
	Group 2	93.8 (136/145)	89.6 (121/135)	75 (15/20)
	Total	94.0 (172/183)	90.5 (153/169)	79.2 (19/24)
FNA	Group 1	100 (7/7)	100 (5/5)	100 (2/2)
	Group 2	86.7 (26/30)	78.9 (22/28)	50 (4/8)
	Total	89.2 (33/37)	81.8 (27/33)	60 (6/10)
Group 1		95.6 (43/45)	94.9 (37/39)	100 (6/6)
Group 2		92.6 (162/175)	87.7 (143/163)	67.9 (19/27)
Total		93.2 (205/220)	89.1 (180/202)	73.5 (25/34)

CNB, core needle biopsy; FNA, fine needle aspiration.