Table 2 Number of retrieved lymph nodes in the SMA and SSA groups
Variable | Mean (SD)/No. (%) | P value | |
|---|---|---|---|
SMA (n = 130) | SSA (n = 129) | ||
Total retrieved LNs | 49.8 (14.6) | 49.2 (14.0) | 0.713 |
 < 30 | 3 (2.3) | 3 (2.3) | 0.992 |
 ≥ 30 | 127 (97.7) | 126 (97.7) | |
Surgical procedure | |||
 Distal gastrectomy | 49.1 (13.2) | 47.2 (12.6) | 0.392 |
 Total gastrectomy | 50.6 (16.1) | 51.1 (15.0) | 0.859 |
Age | |||
 ≤ 60 | 50.6 (14.5) | 49.7 (15.1) | 0.738 |
 > 60 | 49.0 (14.7) | 48.6 (12.9) | 0.860 |
BMI, kg/m2 | |||
 ≤ 24 | 50.5 (13.4) | 51.2 (14.3) | 0.717 |
 > 24 | 48.2 (17.0) | 43.6 (11.4) | 0.179 |
Sex | |||
 Male | 49.8 (13.7) | 48.5 (14.1) | 0.564 |
 Female | 49.9 (16.4) | 50.5 (13.7) | 0.867 |
Tumor location | |||
 Upper | 49.8 (14.0) | 47.0 (12.2) | 0.482 |
 Middle | 51.6 (17.7) | 47.8 (12.1) | 0.304 |
 Lower | 49.1 (13.4) | 50.5 (15.3) | 0.555 |
Size, cm | |||
 ≤4 | 48.9 (13.6) | 50.7 (15.6) | 0.441 |
 > 4 | 51.0 (15.8) | 46.3 (10.0) | 0.086 |
Histology | |||
 Differentiated | 49.3 (13.4) | 49.4 (14.5) | 0.982 |
 Undifferentiated | 50.2 (15.4) | 49.0 (13.6) | 0.622 |
Lymphvascular invasion | |||
 Negative | 51.3 (14.5) | 50.9 (14.9) | 0.867 |
 Positive | 47.8 (14.5) | 46.3 (11.8) | 0.556 |
cT category | |||
 cT1 | 49.9 (15.5) | 52.2 (15.5) | 0.488 |
 cT2 | 47.3 (14.1) | 50.2 (14.2) | 0.539 |
 cT3 | 46.8 (12.2) | 45.7 (12.1) | 0.675 |
 cT4a | 55.9 (15.4) | 48.7 (13.2) | 0.073 |
cN category | |||
 cN0 | 49.5 (14.8) | 52.1 (14.9) | 0.365 |
 cN+ | 50.0 (14.5) | 46.8 (12.8) | 0.158 |
pT category | |||
 pT1 | 48.3 (12.2) | 51.3 (15.7) | 0.319 |
 pT2 | 50.6 (13.6) | 46.3 (12.2) | 0.372 |
 pT3 | 52.4 (16.6) | 48.5 (13.8) | 0.238 |
 pT4a | 46.6 (14.4) | 47.7 (11.8) | 0.783 |
pN category | |||
 pN0 | 49.8 (14.7) | 51.8 (14.7) | 0.478 |
 pN+ | 49.8 (14.6) | 47.0 (13.0) | 0.216 |
LN confined to D2 lymphadenectomy | 49.1 (14.1) | 48.1 (13.2) | 0.555 |
 Surgical procedure | |||
  Distal gastrectomy | 48.6 (13.2) | 47.0 (12.4) | 0.464 |
  Total gastrectomy | 49.7 (15.2) | 49.3 (14.1) | 0.856 |