Table 4 Prognostic factors for overall survival (OS), univariate and multivariate analyses

Age (years)

0.983(0.952–1.015)

0.301

Sex

0.505(0.214–1.189)

0.118

BMI (kg/m²)

0.873(0.747–1.020)

0.087*

0.864(0.745–1.002)

0.054

CEA (ng/mL)

1.011(0.995–1.027)

0.191

TNM stage

0.304

I

Reference

Reference

II

1.650(0.333–8.175)

0.540

III

2.147(0.470–9.801)

0.324

IV

5.351(0.893–32.044)

0.066

Complications

0.035*

0.042*

None

Reference

Reference

Reference

Reference

Minor

1.939(0.652–5.770)

0.234

1.825(0.607–5.487)

0.284

Major

3.884(1.408–10.716)

0.009

3.792(1.366–10.525)

0.010

ASA grade

0.490

1

Reference

Reference

2

0.605(0.230–1.590)

0.308

3

1.118(0.351–3.564)

0.851

Per-op CCRTx

0.037(0.000–4.974)

0.188

Post-op CCRTx

0.583(0.242–1.407)

0.230

Low-VFA vs high-VFA

1.328(0.560–3.152)

0.520

Low-MFA vs high-MFA

0.877(0.372–2.065)

0.764

Low-SMI vs high-SMI

2.673(1.037–6.890)

0.042*

2.776(1.071–7.196)

0.036*

Low-SMD vs high-SMD

2.745(1.065–7.077)

0.037*

3.058(1.178–7.941)

0.022*