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Table 1 Demographics and clinical characteristics of patients undergoing central lymph node dissection

From: Risk factor analysis for predicting cervical lymph node metastasis in papillary thyroid carcinoma: a study of 966 patients

Clinicopathological properties    Central lymph node metastasis
  Total No   Yes  
Subjects, n   966 599 62.0% 367 38.0%
Gender Female 772 496 64.2% 276 35.8%
Male 194 103 53.1% 91 46.9%
Age (years) ≤35 229 97 42.4% 132 57.6%
35–45 248 146 58.9% 102 41.1%
45–55 273 193 70.7% 80 29.3%
> 55 216 163 75.5% 53 24.5%
Tumor size(cm) ≤0.5 178 145 81.5% 33 18.5%
0.5–1.0 363 255 70.2% 108 29.8%
1.0–2.0 275 140 50.9% 135 49.1%
> 2.0 150 59 39.3% 91 60.7%
Ultrasound feature
 Microcalcification No 706 459 65.0% 247 35.0%
Yes 260 140 53.8% 120 46.2%
 Hypoechoic solid nodules No 183 112 61.2% 71 38.8%
Yes 783 487 62.2% 296 37.8%
 Irregular shape No 631 401 63.5% 230 36.5%
Yes 335 198 59.1% 137 40.9%
 Infiltrative margins No 252 158 62.7% 94 37.3%
Yes 714 441 61.8% 273 38.2%
 Intra-nodular vascularity No 328 228 69.5% 100 30.5%
Yes 638 371 58.2% 267 41.8%
Multifocality No 679 439 64.7% 240 35.3%
Yes 287 160 55.7% 127 44.3%
Bilateral No 767 491 64.0% 276 36.0%
Yes 199 108 54.3% 91 45.7%
Extrathyroidal extension No 759 500 65.9% 259 34.1%
Yes 207 99 47.8% 108 52.2%
Distant metastasis No 961 598 62.2% 363 37.8%
Yes 5 1 20.0% 4 80.0%
Hashimoto’s thyroiditis No 604 384 63.6% 220 36.4%
Yes 362 215 59.4% 147 40.6%
TSH value    2.10 ± 1.65 2.13 ± 1.49