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Table 3 Multivariate Cox Regression of recurrence

From: Identifying risk factors of recurrence for clinically node negative papillary thyroid carcinoma with pathologic N1a

Variables

Model I

Model II

HR

95% CI

p

HR

95% CI

p

Tumor size

  ≤ 1 cm

1

  

1

  

  > 1 cm

1.260

0.754–2.105

0.377

1.354

0.808–2.268

0.249

ETE

 No gross ETE

1

  

1

  

 Gross ETE

1.645

0.939–2.883

0.082

1.794

1.024–3.143

0.041

LN ratio

  ≤ 0.5

1

     

  > 0.5

4.794

2.674–8.595

< 0.001

   

Positive LN

  ≤ 2

   

1

  

  ≥ 3

   

2.505

1.513–4.146

< 0.001

  1. CI = Confidence interval, ETE = Extrathyroidal extension, HR = Hazards ratio, LN = Lymph node
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