Research Article
High-Score US-Suspicious Subcentimeter Thyroid Nodules: What Factors Affect Adequate Sampling of US-Guided Fine-Needle Aspiration Biopsy?
Table 4
Adequate sample rate according to various related factors evaluated by multivariate logistic regression.
| | Variable | Adequate sample rate (%) | P value | OR | 95% CI |
| | Nodule size (mm) | | | | | | 3–6 | 72.7 (80/110) | Reference | 1.0 | | | 7–10 | 84.9 (203/239) | <0.001 | 2.96 | 1.63–5.37 |
| | Calcification | | | | | | None | 90.6 (96/106) | <0.001 | 5.31 | 2.22–12.68 | | Microcalcification | 81.3 (148/182) | 0.001 | 3.20 | 1.61–6.37 | | Macrocalcification | 63.9 (39/61) | Reference | 1.0 | |
| | Needle path | | | | | | Perpendicular | 71.8 (74/103) | Reference | 1.0 | | | Parallel | 85.0 (209/246) | 0.044 | 1.84 | 1.02–3.33 |
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