Table 2.
Multivariate logistic regression analysis of the relationship between predictors of C-TIRADS 4 thyroid nodules (significant by univariate analysis) and positive FNAB.
| Predictors | OR | 95% CI | P |
|---|---|---|---|
| Age (year) | <0.001 | ||
| ≤45 | Reference | Reference | |
| >45 | 0.444 | 0.296-0.666 | |
| Nodule size (cm) | 0.561 | ||
| <1.0 | Reference | Reference | |
| ≥1.0 | 0.88 | 0.572-1.354 | |
| Internal or surrounding blood flow signal | 0.793 | ||
| no | Reference | Reference | |
| yes | 0.943 | 0.609-1.461 | |
| Aspect ratio | <0.001 | ||
| ≤1 | Reference | Reference | |
| >1 | 3.032 | 1.819-5.052 | |
| Low echo | <0.001 | ||
| no | Reference | Reference | |
| yes | 3.549 | 2.319-5.432 | |
| Microcalcifications | <0.001 | ||
| no | Reference | Reference | |
| yes | 2.531 | 1.661-3.856 | |
| Morphology | <0.001 | ||
| regular | Reference | Reference | |
| irregular | 2.437 | 1.586-3.745 |