Table 2 Clinicopathological features of GC patients who underwent gastrectomy with curative intent grouped by the extent of lymph node dissection: data are reported for the whole study series and for one-to-one propensity-score matched pairs.
Characteristics | Whole study series | Matched pairs (Case-control Method) | ||||
|---|---|---|---|---|---|---|
D2(n = 262) | D2 plus(n = 132) | P | D2(n = 132) | D2 plus(n = 132) | P | |
Gender | 0.021 | 0.189 | ||||
Male/Female | 198/66 | 84/48 | 94/38 | 84/48 | ||
Age (yr) | <0.001 | 0.111 | ||||
Mean ± sd | 62.3 ± 10.8 | 56.7 ± 12.0 | 59.0 ± 10.5 | 56.7 ± 12.0 | ||
Tumor ___location | <0.001 | 0.072 | ||||
L/M/whole | 58/170/34 | 54/61/17 | 37/78/17 | 54/61/17 | ||
Borrmann type | 0.436 | 0.218 | ||||
I/II/III/IV | 24/74/150/14 | 9/47/68/8 | 13/33/80/6 | 9/47/68/8 | ||
Tumor diameter | 0.590 | 0.799 | ||||
<5 cm/≥5 cm | 92/170 | 50/82 | 48/84 | 50/82 | ||
Histology | 0.092 | 0.455 | ||||
Differentiated/Undifferentiated | 72/190 | 26/106 | 31/101 | 26/106 | ||
Depth of invasion | 0.022 | 0.184 | ||||
pT3/pT4a/pT4b | 32/222/8 | 5/121/6 | 12/116/4 | 5/121/6 | ||
N stage | 0.651 | 0.801 | ||||
pN0/pN1/pN2/pN3a/pN3b | 80/36/76/48/22 | 38/26/37/21/10 | 37/22/46/19/8 | 38/26/37/21/10 | ||
rN stage | 0.003 | 0.321 | ||||
rN0/rN1/rN2/rN3 | 82/78/58/44 | 38/58/29/7 | 38/50/29/15 | 38/58/29/7 | ||
TNM stage | 0.516 | 0.875 | ||||
II/IIIa/IIIb/IIIc | 88/98/52/24 | 37/59/26/10 | 37/65/21/9 | 37/59/26/10 | ||
Average lymph nodes retrieval | <0.001 | 0.255 | ||||
Mean ± sd | 26.2 ± 8.9 | 32.6 ± 12.0 | 31.2 ± 7.9 | 32.6 ± 12.0 | ||
Extranodal tumor deposits | 0.788 | 0.682 | ||||
Present/Absent | 74/188 | 39/93 | 36/96 | 39/93 | ||
Types of gastrectomy | 0.355 | 0.213 | ||||
Total/Subtotal | 114/148 | 51/81 | 61/71 | 51/81 | ||
Postoperative chemotherapy | 0.484 | 0.394 | ||||
Yes/No | 194/68 | 102/30 | 96/36 | 102/30 | ||
