Table 3.
Multivariate logistic regression of lymph node metastasis in single PTMC
| Adjusted OR | 95% CI | p-value | |
|---|---|---|---|
| Male | 1.987 | 1.369–2.884 | < 0.001 |
| Age (years, mean ± SD) | 0.953 | 0.939–0.967 | < 0.001 |
| Histologic variation | |||
| Conventional | Reference | ||
| Follicular variant | 0.473 | 0.326–0.686 | < 0.001 |
| Tall cell variant | 0.999 | ||
| Other | 0.792 | ||
| Lymphatic invasion | 4.389 | 1.522–12.658 | 0.006 |
| Perineural invasion | 6.545 | 1.262–33.948 | 0.025 |
| Vascular invasion | 4.564 | 0.460–45.266 | 0.195 |
| ETE | |||
| No | Reference | ||
| Minimal | 1.852 | 1.298–2.643 | 0.001 |
| Gross | 2.143 | 0.656–6.997 | 0.207 |
PTMC Papillary thyroid microcarcinoma, OR Odds ratio, CI Confidence interval, ETE Extrathyroidal invasion