Table 1. Characteristics of the cohort.
| Characteristics | N=1,266 | % |
|---|---|---|
| Gender | ||
| Male | 326 | 25.8 |
| Female | 940 | 74.2 |
| Age | ||
| ≤55 years | 1,058 | 83.6 |
| >55 years | 208 | 16.4 |
| Hashimoto’s disease | ||
| Yes | 261 | 20.6 |
| No | 1,005 | 79.4 |
| Goiter | ||
| Yes | 118 | 9.3 |
| No | 1,148 | 90.7 |
| Capsule invasion | ||
| No | 1,207 | 95.3 |
| Yes | 59 | 4.7 |
| Tumor size | ||
| ≤1 cm | 396 | 31.3 |
| 1–1.5 cm | 601 | 47.5 |
| 1.5–2 cm | 224 | 17.7 |
| >2 cm | 45 | 3.6 |
| Surgery | ||
| Lobectomy | 1,049 | 82.9 |
| Total thyroidectomy | 95 | 7.5 |
| Near total thyroidectomy | 122 | 9.6 |
| Lateral neck dissection | ||
| Yes | 75 | 5.9 |
| No | 1,191 | 94.1 |
| CLNM | ||
| No | 815 | 64.4 |
| Yes | 451 | 35.6 |
| LLNM | ||
| No | 1,210 | 95.6 |
| Yes | 56 | 4.4 |
CLNM, central lymph node metastasis; LLNM, lateral lymph node metastasis.