Skip to main content

Table 5 Univariate and multivariate analysis of factors associated with OS in the primary cohort

From: A novel staging system and clinical predictive nomogram for more accurate staging and prognosis of malignant pancreatic intraductal papillary mucinous neoplasms: a population-based study

Variable

Variable levels

Univariate analysis

Multivariate analysis

HR

95% CI

p-value

HR

95% CI

p-value

Age

< 70

Reference

  

Reference

  

≥ 70

1.37

1.21–1.56

< 0.001***

1.49

1.30–1.70

< 0.001***

Sex

Female

Reference

     

Male

0.93

0.82–1.05

0.252

   

Race

Black

Reference

  

Reference

  

White

0.87

0.71–1.06

0.163

1.1

0.9–1.36

0.355

Others

0.59

0.44–0.78

< 0.001***

0.78

0.58–1.05

0.099

Marriage

Others

Reference

  

Reference

  

Married

0.82

0.72–0.94

0.003**

0.98

0.86–1.13

0.801

Location

Head

Reference

  

Reference

  

Body or tail

1.70

1.47–1.96

< 0.001***

1.22

1.04–1.43

0.014*

Others

1.24

1.04–1.48

0.015*

1.11

0.93–1.33

0.256

Grade

Others

Reference

  

Reference

  

High

1.38

1.16–1.64

< 0.001***

1.59

1.32–1.91

< 0.001***

ELN

< 15

Reference

  

Reference

  

≥ 15

0.51

0.43–0.59

 < 0.001***

0.93

0.78–1.13

0.479

Extend

Inside

Reference

  

Reference

  

Beyond

2.26

1.97–2.58

< 0.001***

1.14

0.97–1.35

0.122

Surgery

Yes

Reference

  

Reference

  

No

5.14

4.48–5.90

< 0.001***

3.6

2.88–4.49

< 0.001***

Chemotherapy

Yes

Reference

  

Reference

  

No/unknown

0.79

0.69–0.89

< 0.001***

2.04

1.77–2.36

< 0.001***

Radiotherapy

Yes

Reference

     

No/unknown

0.98

0.84–1.14

0.690

   

T8th

Tis

Reference

  

Reference

  

T1a

1.4

0.74–2.66

0.301

1.68

0.88–3.2

0.115

T1b

1.93

0.91–4.11

0.088

2.58

1.21–5.52

0.014*

T1c

4.16

2.86–6.05

< 0.001***

3.93

2.66–5.79

< 0.001***

T2

6.59

4.78–9.09

< 0.001***

5.13

3.62–7.27

< 0.001***

T3

6.7

4.86–9.23

< 0.001***

5.19

3.68–7.33

 < 0.001***

T4

12.99

9.34–18.08

< 0.001***

6.16

4.18–9.07

< 0.001***

N8th

N0

Reference

  

Reference

  

N1

1.21

1.02–1.43

0.026*

1.55

1.28–1.88

< 0.001***

N2

1.47

1.17–1.83

< 0.001***

2.94

2.25–3.84

< 0.001***

M8th

M0

Reference

  

Reference

  

M1

5.58

4.84–6.42

< 0.001***

2.35

1.94–2.87

< 0.001***

  1. p < 0.05; **p < 0.01; ***p < 0.001