Table 2 Univariate and multivariate analyses of overall survival and cancer-specific survival in the local cohort

Age

 Non-EGC

1

1

1

1

 EGC

3.77 (1.82 − 7.78)

 < 0.001

3.38 (1.57–7.27)

0.002

3.50 (1.54–7.93)

0.003

3.74 (1.64–8.55)

0.002

Gender

 Male

1

1

 Female

0.90 (0.49–1.66)

0.739

0.77 (0.39–1.55)

0.471

BMI (kg/m²)

 18.5–24

1

1

1

  < 18.5

2.25 (1.13–4.49)

0.021

1.67 (0.81–3.45)

0.165

1.87 (0.85–4.12)

0.120

  ≥ 24

0.67 (0.29–1.51)

0.331

0.70 (0.31–1.59)

0.396

0.55 (0.21–1.42)

0.215

CEA

 Negative

1

1

1

1

 Positive

3.30 (1.84–5.91)

 < 0.001

3.16 (1.74–5.74)

 < 0.001

3.75 (1.99–7.07)

 < 0.001

3.73 (1.96–7.11)

 < 0.001

CA199

 Negative

1

1

 Positive

1.58 (0.74 − 3.36)

0.240

1.43 (0.6 − 3.4)

0.422

Location

 Lower

1

1

 Upper

0.77 (0.38–1.58)

0.479

0.78 (0.36 − 1.71)

0.541

 Middle

1.36 (0.69 − 2.67)

0.370

1.21 (0.57 − 2.6)

0.616

 Overlapped

1.23 (0.29–5.30)

0.782

1.46 (0.33 − 6.38)

0.617

Lauren type

 Intestinal

1

1

 Diffuse

1.27 (0.66–2.47)

0.477

1.72 (0.8–3.69)

0.168

 Mixed

1.19 (0.57–2.51)

0.640

1.50 (0.64–3.54)

0.354

Grade

 Well

1

1

 Moderately

3.70 (0.49–27.9)

0.205

2.54 (0.33–19.67)

0.373

 Poorly and undifferentiated

3.97 (0.54–29.1)

0.175

3.43 (0.47–25.27)

0.226

T stage

 T1-2

1

1

1

 T3-4

2.28 (0.82–6.35)

0.114

1.41 (0.40–4.98)

0.599

2.49 (0.77–8.06)

0.129

1.48 (0.32–6.73)

0.616

N stage

 N0

1

1

1

 N1

0.94 (0.52–1.69)

0.835

0.96 (0.51–1.8)

0.887

0.87 (0.45–1.67)

0.675

0.87 (0.43–1.75)

0.691

 N2

0.24 (0.03–1.73)

0.156

0.33 (0.03–3.54)

0.361

0.28 (0.04–2.07)

0.213

0.42 (0.03–5.14)

0.493

 N3

0 (0-Inf)

0.997

0 (0-Inf)

0.997

0 (0-Inf)

0.997

0 (0-Inf)

0.997

Surgery

 Open

1

1

 Laparoscope

1.05 (0.58–1.87)

0.879

0.97 (0.51–1.85)

0.937

Chemotherapy

 No

1

1

 Yes

1.18 (0.59–2.36)

0.644

1.70 (0.71–4.06)

0.231