Table 3.
Analysis of factors affecting metastatic status of lymph nodes.
| Variables | Nonmetastatic nodes | Metastatic nodes | Univariate analysis | |
|---|---|---|---|---|
| n = 208 | n = 138 | OR (95%) | p | |
| Age | ||||
| <29 | 34 (16.3) | 37 (26.8) | 0.5 (0.3–0.9) | 0.02 |
| ≥29 | 174 (83.7) | 101 (73.2) | ||
| Gender | ||||
| Male | 7 (3.4) | 7 (5.1) | 0.6 (0.2–1.9) | 0.6 |
| Female | 201 (96.6) | 131 (94.9) | ||
| Graves' disease | ||||
| No | 2 (1) | 2 (1.4) | 0.7 (0.1–4.7) | 0.7 |
| Yes | 206 (99) | 136 (98.6) | ||
| Tumor diameter on US (mm) | 7.1 ± 3.3 (2.6–20) | 8.5 ± 0.3 (2.7–20) | 1.1 (1.0–1.2) | 0.00 |
| Tumor location | ||||
| Single lobe | 200 (96.2) | 129 (93.5) | 1.7 (0.7–4.6) | 0.3 |
| Both lobes/isthmus | 8 (3.8) | 9 (6.5) | ||
| Surgical procedure | ||||
| Total thyroidectomy | 28 (13.5) | 27 (19.6) | 0.6 (0.4–1.1) | 0.1 |
| Conservative thyroidectomy | 180 (86.5) | 111 (80.4) | ||
| Central neck dissection | ||||
| Both sides | 24 (11.5) | 24 (17.4) | 0.6 (0.3–1.1) | 0.12 |
| One side | 184 (88.5) | 114 (28.6) | ||
| Tumor classification | ||||
| T1a | 169 (81.2) | 98 (71) | 1.8 (1.1–2.9) | 0.03 |
| ≥T1b | 39 (18.8) | 40 (29) | ||
| Microscopic capsular invasion | ||||
| No | 153 (73.6) | 103 (74.6) | 0.9 (0.6–1.5) | 0.82 |
| Yes | 55 (26.4) | 35 (25.4) | ||
| Thyroiditis | ||||
| No | 168 (80.8) | 117 (84.8) | 0.8 (0.4–1.3) | 0.3 |
| Yes | 40 (19.2) | 21 (15.2) | ||