Table 4 Univariate and multivariate analysis for disease free survival

Age

1.026

(0.995–1.059)

0.096

Female

Ref

Male

1.4503

(0.8437–2.493)

0.179

Colon primary

Ref

Rectal primary

0.7183

(0.2847–1.812)

0.484

Classic adenocarcinoma

Ref

Mucinous adenocarcinoma

1.1205

(0.5979–2.1)

0.723

Grade I (histology)

Ref

Grade II (histology)

0.90843

(0.4726–1.746)

0.773

Grade III (histology)

0.73676

(0.3409–1.592)

0.437

Presenting stage I–III

Ref

Presenting stage IV

1.4028

(0.8112–2.426)

0.226

Metachronous

Ref

Synchronous

1.2770

(0.7426–2.196)

0.377

Peri-op chemo

0.419

(0.1873–0.938)

0.034

0.448

(0.1968–1.022)

0.056

Intra-op IV chemo

1.7762

(0.9555–3.302)

0.069

PCI (continuous)

1.101

(1.059–1.145)

1.09e−06

1.100

(1.047–1.156)

0.0001

Operative time (hours)

1.199

(1.068–1.346)

0.002

1.014

(0.875–1.175)

0.856

Blood loss (100 ml)

1.0177

(0.9875–1.047)

0.265

No complications

Ref

Grade I (complication)

1.072

(0.510–1.996)

0.838

Grade II (complication)

1.105

(0.472–2.576)

0.817

Grade III (complication)

1.936

(0.739–5.208)

0.185

Grade IV (complication)

1.849

(0.616–1.795)

0.260