Table 3 Multivariate logistic regression analysis of independent predictors for BM in TC patients

 <50

Reference

 ≥ 50

3.350 (1.641–6.840)

<0.001

 Black

Reference

 Other ^a

0.328 (0.128–0.837)

0.020

 White

0.331 (0.179–0.612)

<0.001

 ATC

Reference

 FTC

3.976 (1.331–11.880)

0.013

 MTC

0.823 (0.149–4.549)

0.823

 PTC

0.728 (0.292–1.816)

0.728

 Grade I

Reference

 Grade II

2.320 (1.096–4.908)

0.028

 Grade III

4.701 (1.959–11.286)

0.001

 Grade IV

7.068 (2.111–23.672)

0.002

 T1

Reference

 T2

3.689 (1.065–12.780)

0.040

 T3

6.819 (2.233–20.823)

0.001

 T4

10.978 (2.898–41.584)

<0.001

 N0

Reference

 N1

1.768 (1.005–3.109)

0.048