Table 7 Prognostic value of clinicopathological factors and copy number variation of mtDNA in univariate and multivariate Cox regression analysis (n =204)

1.00 (reference)

1.00 (reference)

1.00 (0.54–1.83)

0.99

1.78 (0.93–3.42)

0.09

0.84 (0.53–1.34)

0.46

1.40 (0.84–2.35)

0.20

1.00 (reference)

1.00 (reference)

2.70 (1.71–4.25)

<0.001

2.43 (1.46–4.05)

0.001

1.00 (reference)

1.00 (reference)

1.98 (1.15–3.43)

0.015

1.71 (0.95–3.06)

0.07

2.32 (1.29–4.18)

0.005

2.24 (1.22–4.14)

0.01

5.46 (2.28–13.11)

<0.001

5.42 (2.08–14.13)

0.001

1.00 (reference)

1.00 (reference)

2.78 (1.10–7.07)

0.03

2.33 (0.88–6.15)

0.09