Table 1.
Patients’ characteristics
| Variable | Total (n=158) | 3D group (n=98) | 2D group (n=60) | p-value |
|---|---|---|---|---|
| Age (yr) | ||||
| ≤ 50 | 49 (31.0) | 36 (36.7) | 13 (21.7) | 0.041 |
| > 50 | 109 (69.0) | 62 (63.3) | 47 (78.3) | |
| Gender | ||||
| Male | 114 (72.2) | 76 (77.5) | 38 (63.3) | 0.026 |
| Female | 44 (27.8) | 22 (22.5) | 22 (36.7) | |
| ECOG PS | ||||
| 0 | 68 (43.0) | 46 (47.0) | 22 (36.7) | 0.129 |
| 1 | 89 (56.3) | 52 (53.0) | 37 (61.7) | |
| 2 | 1 (0.70) | 0 | 1 (1.6) | |
| Stage | ||||
| IB | 32 (20.3) | 20 (20.4) | 12 (20.0) | 0.993 |
| II | 53 (33.5) | 33 (33.7) | 20 (33.3) | |
| IIIA | 25 (15.8) | 15 (15.3) | 10 (16.7) | |
| IIIB | 16 (10.1) | 10 (10.2) | 6 (10.0) | |
| IV | 32 (20.3) | 20 (20.4) | 12 (20.0) | |
| T stage | ||||
| 1 | 22 (13.9) | 12 (12.2) | 10 (16.7) | 0.711 |
| 2 | 82 (51.9) | 54 (55.1) | 28 (46.6) | |
| 3 | 47 (29.8) | 28 (28.6) | 19 (31.7) | |
| 4 | 7 (4.4) | 4 (4.1) | 3 (5.0) | |
| N stage | ||||
| 0 | 22 (13.9) | 16 (16.3) | 6 (10.0) | 0.664 |
| 1 | 79 (50.0) | 46 (46.9) | 33 (55.0) | |
| 2 | 28 (17.7) | 18 (18.4) | 10 (16.7) | |
| 3 | 29 (18.4) | 18 (18.4) | 11 (18.3) | |
| Type of surgery | ||||
| Subtotal gastrectomy, billoth type I | 72 (45.8) | 46 (46.9) | 26 (43.3) | 0.847 |
| Subtotal gastrectomy, billoth type II | 20 (11.5) | 12 (12.3) | 8 (13.3) | |
| Total gastrectomy | 65 (41.9) | 40 (40.8) | 25 (41.7) | |
| Others | 1 (0.8) | 0 | 1a)(1.7) | |
| Histology | ||||
| Adenocarcinoma | 110 (69.6) | 65 (66.4) | 45 (75.0) | 0.442 |
| Signet ring cell | 45 (28.5) | 32 (32.6) | 13 (21.7) | |
| Undifferentiated | 3 (1.9) | 1 (1.0) | 2 (3.3) | |
| Resection margin (cm) | ||||
| Negative adequate (> 3) | 86 (54.4) | 49 (50.0) | 37 (61.7) | 0.024 |
| Negative close (≤ 3) | 70 (44.3) | 47 (48.0) | 23 (38.3) | |
| Positive | 2 (1.3) | 2 (2.0) | 0 | |
| Chemotherapy | ||||
| IV fluorouracil and leucovorin | 86 (54.4) | 47 (48.0) | 39 (65.0) | 0.048 |
| Oral capecitabine and cisplatin | 72 (45.6) | 51 (52.0) | 21 (35.0) | |
3D, 3-dimensional; 2D, 2-dimensional; ECOG PS, Eastern Cooperative Oncology Group performance score.
a)
Ivor-Lewis operation.