Table 4 Cox-regression multivariate analysis of PFS and OS

CEA level (≤ 15 / > 15 ng/ml)

1.906(1.107–3.283)

0.020

2.493(1.146–5.423)

0.021

Pathological classification (Low/Middle-High differentiated)

1.298(0.707–2.384)

0.400

1.972(0.793–4.906)

0.144

TNM stage (stage I-III/IV)

2.749(1.412–5.351)

0.003

9.215(3.199–26.549)

0.000

Number of LO (≤ 2 / > 2 LO)

2.150(1.100–4.200)

0.025

1.678(0.772–3.650)

0.192

Cumulative GTV (≤ 40 / > 40 cm³)

2.012(1.060–3.821)

0.033

4.164(1.791–9.679)

0.001

System treatments(C + TT/C alone)

-

-

2.388(1.024–5.572)

0.044