| Variables | Young Group | Control Group | P |
| Age (Mean) | 32.94 | 52.00 | |
| Gender | <0.001 | ||
| Female, n (%) | 29 (52.73) | 13 (20.97) | |
| Male, n (%) | 26 (47.27) | 49 (79.03) | |
| Female:Male | 1.12:1 | 0.27:1 | |
| Tumor Location, n (%) | 0.001 | ||
| Upper 1/3 | 2 (3.64) | 18 (29.03) | |
| Middle 1/3 | 15 (27.27) | 19 (30.65) | |
| Lower 1/3 | 31 (56.36) | 20 (32.26) | |
| ≥Two Thirds | 7 (12.73) | 5 (8.06) | |
| Tumor Size, n (%) | 0.004 | ||
| ≤4 cm | 8 (14.55) | 25 (40.32) | |
| >4 cm | 47 (85.45） | 37 (59.68) | |
| Macroscopic Type, n (%) | 0.001 | ||
| Borrmann I | 2 (3.64) | 17 (27.42) | |
| Borrmann II | 18 (32.73) | 24 (38.71) | |
| Borrmann III | 32 (58.18) | 20 (32.26) | |
| Borrmann IV | 3 (5.45) | 1 (1.61) | |
| Histological Type, n (%) | 0.039 | ||
| Poorly Differentiated | 45 (81.82) | 39 (62.90) | |
| Well-Differentiated | 10 (18.18) | 23 (37.10) | |
| The 7th T Stage (UICC), n (%) | 0.025 | ||
| T1 + T2 | 10 (18.18) | 24 (38.71) | |
| T3 + T4 | 45 (81.82) | 38 (61.29) | |
| Lymph Node Involvement, n (%) | 0.063 | ||
| N0 | 8 (14.55) | 21 (33.87) | |
| N1 | 10 (18.18) | 13 (20.97) | |
| N2 | 32 (58.18) | 23 (37.10) | |
| N3 | 5 (9.09) | 5 (8.06) | |
| TNM Stage, n (%) | <0.001 | ||
| I | 4 (7.27) | 11 (17.74) | |
| II | 5 (9.09) | 14 (22.58) | |
| III | 9 (16.36) | 27 (43.55) | |
| IV | 37 (67.27) | 10 (16.13) | |
| Surgical Radicalism, n (%) | <0.001 | ||
| Curative Resection | 31 (56.36) | 46 (74.19) | |
| Palliative Resection | 5 (9.09) | 13 (20.97) | |
| Exploratory Laparoscopy | 19 (34.55) | 3 (4.84) | |
| Adjuvant Chemotherapy, n (%) | 0.063 | ||
| Yes | 27 (49.10) | 42 (67.74) | |
| No | 28 (50.90) | 20 (32.26) |