Table 3 Comparison of clinicopathological characteristics according to the number of LNM risk factors
n | Total number of items | p value | |||
|---|---|---|---|---|---|
0/1 | 2 | 3 | |||
Total | 58 | 40 | 14 | 4 | |
Age, mean ± SD (years) | 67.4 (9.9) | 66.3 (10.8) | 68.4 (6.9) | 74.8 (7.4) | 0.38 |
Sex, n (%) | |||||
Male | 46 (79.3) | 35 (87.5) | 8 (57.1) | 3 (75.0) | 0.05 |
Female | 12 (20.7) | 5 (12.5) | 6 (42.9) | 1 (25.0) | |
Tumor size, mean ± SD (mm) | 27.5 (14.0) | 26.5 (15.0) | 27.8 (11.1) | 36.8 (11.6) | 0.38 |
Depth of tumor, n (%) | |||||
M | 8 (13.8) | 8 (20.0) | 0 (0) | 2 (1.6) | < 0.01 |
SM1 | 22 (37.9) | 19 (47.5) | 2 (14.3) | 1 (25.0) | |
SM2 | 28 (48.3) | 13 (32.5) | 12 (85.7) | 3 (75.0) | |
Histological type, n (%) | |||||
Differentiated | 45 (77.6) | 29 (72.5) | 12 (85.7) | 4 (100) | 0.32 |
Undifferentiated | 13 (22.4) | 11 (27.5) | 2 (14.3) | 0 (0) | |
Lymphatic invasion, n (%) | |||||
Negative | 36 (62.1) | 31 (77.5) | 4 (28.6) | 1 (25.0) | < 0.01 |
Positive | 22 (37.9) | 9 (22.5) | 10 (71.4) | 3 (75.0) | |
Venous invasion, n (%) | |||||
Negative | 44 (75.9) | 34 (85.0) | 9 (64.3) | 1 (25.0) | 0.05 |
Positive | 14 (24.1) | 6 (15.0) | 5 (35.7) | 3 (75.0) | |
Ulceration (scar), n (%) | |||||
Negative | 35 (60.3) | 27 (67.5) | 6 (42.9) | 2 (50.0) | 0.24 |
Positive | 23 (39.7) | 13 (32.5) | 8 (57.1) | 2 (50.0) | |
Type of gastrectomy, n (%) | |||||
DG | 35 (60.3) | 24 (60.0) | 9 (64.3) | 2 (50.0) | 0.87 |
TG | 23 (39.7) | 16 (40.0) | 5 (35.7) | 2 (50.0) | |
Postoperative complicationa, n (%) | |||||
Negative | 45 (77.6) | 32 (80.0) | 9 (64.3) | 4 (100) | 0.26 |
Positive | 13 (22.4) | 8 (20.0) | 5 (35.7) | 0 (0) | |
30-day mortality, median range (%) | 0.3 (0.1–6.3) | 0.3 (0.1–6.3) | 0.3 (0.1–0.4) | 0.5 (0.2–0.6) | 0.11 |
In-hospital mortality, median range (%) | 0.5 (0.1–15.3) | 0.5 (0.1–15.3) | 0.5 (0.1–1.8) | 0.7 (0.4–2.0) | 0.59 |
Stratification risk of LNM, % (95% CI) | 12.66 (10.51–15.07) | 0.76 (0.16–2.20) | 15.08 (11.26–19.60) | 33.87 (25.62–42.91) | |