Table 1 Demographic and pathological characteristics of GC patients

Age (year) (mean ± SD)

60.12 ± 11.54

BMI (Kg/m²)

23.5 ± 3.25

Mean follow-up (Month)

74.3 ± 23.2

Median survival (Month)

59.1 ± 26.2

Sex

• Male

• Female

338(52.9%)

301(47.1%)

Marital status

• Unmarried

• Married

37(5.8%)

602(94.2%)

Smoking status

• Yes

• NO

275(43.1%)

193(56.9%)

Education

• Illiterate

• < Diploma

• >=Diploma

99(15.6%)

264(41.3%)

264(43.1%)

Alcohol consumption

• Yes

• NO

• Missing

131(20.5%)

311(48.7%)

197(30.8%)

H- pylori test

• positive

• negative

• Missing

234(36.6%)

159(24.9%)

246(38.5%)

Family history of GC

• Yes

• No

260(40.7%)

379(59.3%)

Tumor Location

• Cardia

• Fundus

• Antrum

• Missing

260(40.7%)

187(29.2%)

109(17.1%)

83(13%)

Tumor Type

• Adenoma carcinoma

• Lymphoma

• Other & Unknown

343(53.7%)

60(9.4%)

236(36.9%)

Number of examined LNs

• < 15

• ≥ 15

322(50.4%)

253(49.6%)

Tumor size (cm)

• ≤ 5

• > 5

• Unknown

269(42.1%)

310(48.5%)

64(9.4%)

NLNs

• 1–9

• 10–15

• ≥ 16

155(24.3%)

231(36.2%)

253(39.6%)

Metastasis

• Yes

• No

209(32.7%)

430(67.3%)

Tumor stage

• T1

• T2

• T3

• Unknown

128(20%)

207(32.2%)

152(23.9%)

152(23.9%)

Differentiation grade

• Well

• Moderate

• Poor

• Unknown

249(38.9%)

190(29.8%)

77(12.1%)

123(19.2%)