Table 2 Proportional subdistribution hazard models of probabilities of cancer-specific death for elderly patients with colorectal cancer after surgery

 Married

1

 Other

1.200

1.145–1.255

< 0.001

 ≤ 5

1

 > 5

1.09

1.035–1.146

0.002

 I/II

1

 III/IV

1.322

1.262–1.382

< 0.001

 T1/T2

1

 T3

2.162

2.034–2.289

< 0.001

 T4

3.432

3.293–3.570

< 0.001

 N0

1

 N1

2.289

2.211–2.367

< 0.001

 N2

3.297

3.211–3.383

< 0.001

 M0

1

 M1

3.554

3.484–3.623

< 0.001

 Normal

1

 Elevated

1.447

1.388–1.507

< 0.001

 Negative

1

 Positive

1.24

1.172–1.308

< 0.001

 Yes

1

 No/unknown

1.994

1.931–2.057

< 0.001