Table 3 Univariate analysis of prognostic factors in young patients - Cox Proportional Hazard Model

Gender

Male

49

1.436

0.4751

Female

Neoadjuvant therapy

Not given

48

3.012

0.0382

Given

Duration of symptoms

≤ 3 months

39

0.804

0.7472

>3 months

CEA level

normal

33

1.508

0.5916

elevated

Tumour location

Right colon

43

1.021

0.9586

Left colon

Rectum

Histology

adenocarcinoma

46

1.237

0.7806

mucinous

Differentiation (1)

Well

46

1.716

0.2131

Moderately

Poorly

Differentiation (2)

Well

46

1.413

0.6510

Non-well

Differentiation (3)

Poorly

46

0.451

0.1475

Non-poorly

AJCC stage (1)

I

46

1.835

0.0799

II

III

IV

AJCC stage (2)

I

46

1.257

0.7637

I1, 111 and 1V

AJCC stage (3)

1 and II

46

2.524

0.1134

II,111 and 1V

AJCC stage (4)

1,11 and III

46

3.925

0.0367

IV

Resection Margin

R0

46

3.684

0.0142

R1

Perineural invasion

-

38

2.591

0.2304

+

Lymphatic invasion

-

37

2.909

0.1729

+

Vascular invasion

-

38

2.404

0.1460

+

Tumor margin

Pushing

13

0.817

0.8691

Infiltrating

Adjuvant therapy (1)

Given

39

3.350

0.2471

Not Given

Adjuvant therapy (2)

Chemotherapy

39

0.4174

0.6576