High-Score US-Suspicious Subcentimeter Thyroid Nodules: What Factors Affect Adequate Sampling of US-Guided Fine-Needle Aspiration Biopsy?

Table 3

Adequate sample rate in relation to technical factors.

Variable	No. of adequate sampling cases	Total no. of cases	Adequate sample rate (%)	P value
Biopsy needle gauge				0.421
22	68	87	78.2
23	215	262	82.1
Needle path				0.004
Perpendicular	74	103	71.8
Parallel	209	246	85.0
Radiologist				0.331
A	94	115	81.7
B	99	128	77.3
C	90	106	84.9