Table 1 Comparison of patient characteristics
Group NE (< 70 years) | Group E (≥ 70 years) | p value | ||||
|---|---|---|---|---|---|---|
n | % | n | % | |||
Sex | Male | 150 | 56.2 | 111 | 58.4 | 0.701 |
Female | 117 | 43.8 | 79 | 41.6 | ||
Age | 58.18 ± 8.86 | 76.43 ± 4.35 | 0.001 | |||
BMI | 26.2 ± 5.72 | 25.9 ± 4.90 | 0.700 | |||
ASA score | 1–2 | 177 | 68.3 | 71 | 38.6 | 0.001 |
3–4 | 82 | 31.7 | 113 | 61.4 | ||
Tumor localization (third) | Upper 1/3 | 51 | 19.1 | 26 | 16.8 | 0.147 |
Middle 1/3 | 119 | 44.6 | 80 | 42.1 | ||
Lower 1/3 | 97 | 36.3 | 84 | 44.2 | ||
Gastrectomy | Total | 83 | 31.1 | 47 | 24.7 | 0.143 |
Subtotal | 184 | 68.9 | 143 | 75.3 | ||
Lymphanodectomy | D1 | 13 | 5.0 | 18 | 9.8 | 0.059 |
D2 | 246 | 95.0 | 165 | 90.2 | ||
Multivisceral surgery | Yes | 19 | 7.3 | 15 | 8.2 | 0.721 |
No | 241 | 92.7 | 168 | 91.8 | ||
Tumor invasion | T1a | 64 | 24.0 | 35 | 18.4 | 0.217 |
T1b | 63 | 23.6 | 56 | 29.5 | ||
T2 | 140 | 52.4 | 99 | 52.1 | ||
Lymph node metastasis | Yes | 101 | 37.8 | 74 | 38,9 | 0.845 |
No | 166 | 62.2 | 116 | 61,1 | ||
N categories | N0 | 166 | 62.2 | 116 | 61.1 | 0.778 |
N1 | 65 | 24.3 | 49 | 25.8 | ||
N2 | 19 | 7.1 | 17 | 8.9 | ||
N3 | 17 | 6.3 | 8 | 4.3 | ||
Distant metastasis | Yes | 5 | 1.9 | 3 | 1.6 | 0.999 |
No | 262 | 98.1 | 187 | 98.4 | ||
Lauren classification | Diffuse | 112 | 42.3 | 17 | 21.8 | 0.001 |
Mix | 31 | 11.7 | 6 | 8.9 | ||
Intestinal | 121 | 45.8 | 63 | 69.3 | ||
Tumor differentiation grade | G1 | 27 | 10.1 | 25 | 13.2 | 0.001 |
G2 | 69 | 25.8 | 84 | 44.2 | ||
G3 | 171 | 64.0 | 81 | 42.6 | ||
Tumor size | < 2 cm | 88 | 34.2 | 56 | 30.6 | 0.471 |
≥ 2 cm | 169 | 65.8 | 127 | 69.4 | ||