Table 2 Univariate and multivariate analyses of risk factors for recurrence within 6 months after pancreatic resection

Neoadjuvant treatment

Yes

1.065

0.629 – 1.806

0.814

No

Preoperative CA19-9

< 175.8

2.005

1.441 – 2.791

<0.001

2.315

1.288 – 4.162

0.005

≥ 175.8

mGPS

0

1.785

1.272 – 2.505

<0.001

1.288

0.873 – 1.899

0.202

1,2

Tumor size

< 31

3.371

1.876 – 6.058

<0.001

1.93

1.002 – 3.719

0.049

≥ 31

Complication

Yes

1.905

1.118 – 3.246

0.017

2.011

1.13 – 3.577

0.018

No

Histology

tub

1.43

0.809 – 2.53

0.219

por, others

Resection margin

Positive

1.461

0.831 – 2.566

0.188

Negative

Peritoneal cytology

Positive

3.881

2.092 – 7.199

<0.001

2.31

1.142 – 4.67

0.02

Negative

N factor

0

1.726

1.217 – 2.448

0.002

1.19

0.8 – 1.771

0.389

1,2

Adjuvant chemotherapy

Yes

9.263

5.451 – 15.74

<0.001

7.239

3.918 – 13.38

<0.001

No