Table 4 Univariate and multivariate analysis in elderly patients with gastric cancer for OS

Age (≥80 vs < 80 years)

2.132

1.542–2.947

< 0.001

1.673

1.196–2.340

0.003

Sex (female vs male)

0.944

0.682–1.307

0.728

BMI (< 22.0 vs ≥22.0 kg/m²)

1.211

0.895–1.637

0.214

ASA-PS score (2.3 vs 1)

1.843

0.993–3.423

0.053

Histology (undifferentiated vs differentiated)

1.606

1.183–2.180

0.002

1.362

0.996–1.864

0.053

Lymphatic invasion (present vs absent)

2.326

1.657–3.266

< 0.001

0.900

0.552–1.466

0.671

Venous invasion (present vs absent)

2.007

1.475–2.732

< 0.001

1.364

0.928–2.005

0.114

pT (≥2 vs 1)

2.698

1.973–3.691

< 0.001

1.278

0.867–1.883

0.215

pN (present vs absent)

3.101

2.287–4.205

< 0.001

2.123

1.465–3.079

< 0.001

Operation duration (≥154 vs < 154 min)

1.054

0.571–1.946

0.866

Bleeding (≥206 vs < 206 mL)

1.903

1.407–2.572

< 0.001

1.572

1.151–2.147

0.008

GNRI (< 97.0 vs ≥97.0)

2.454

1.799–3.348

< 0.001

1.905

1.374–2.641

< 0.001