Table 3 Univariate and multivariate analyses of risk factors for recurrence within 12 months after pancreatic resection

Neoadjuvant treatment

Yes

1.224

0.884 – 1.696

0.223

No

Preoperative CA19-9

< 175.8

2.005

1.441 – 2.791

<0.001

1.658

1.173 – 2.344

0.004

≥ 175.8

mGPS

0

1.512

1.199 – 1.906

0.001

1.259

0.973 – 1.629

0.079

1,2

Tumor size

< 31

1.897

1.372 – 2.623

<0.001

1.36

0.948 – 1.951

0.095

≥ 31

Histology

tub

1.563

1.086 – 2.249

0.01

1.595

1.108 – 2.296

0.001

por, others

Complication

Yes

1.356

0.954 – 1.93

0.09

No

Resection margin

Positive

1.416

0.993 – 2.02

0.055

Negative

Peritoneal cytology

Positive

3.881

2.092 – 7.199

<0.001

2.579

1.595 – 4.172

<0.001

Negative

N factor

0

1.76

1.418 – 2.183

<0.001

1.785

1.148 – 2.775

0.01

1,2

Adjuvant chemotherapy

No

4.912

3.247 – 7.432

<0.001

4.799

3.036 – 7.586

<0.001

Yes