Table 1.
Baseline characteristics of the overall patient population.
| Characteristics n(%) | Skip(n=55) | PT-only (n=411) | p | PT+EP (n=391) | p | N0(n=800) | p | |
|---|---|---|---|---|---|---|---|---|
| Gender | 0.740 | 0.443 | 0.874 | |||||
| Male | 40(72.7) | 310(75.4) | 261(66.8) | 592(74.0) | ||||
| Female | 15(27.3) | 101(24.6) | 130(33.2) | 208(26.0) | ||||
| Age (years) | 0.924 | 0.247 | 0.289 | |||||
| ≤60 | 30(54.5) | 227(55.2) | 245(62.7) | 494(61.8) | ||||
| >60 | 25(45.5) | 184(44.8) | 146(37.3) | 306(38.3) | ||||
| Tumor size (cm) | 0.676 | 0.041 | 0.002 | |||||
| ≤4 | 26(47.3) | 182(44.3) | 130(33.2) | 539(67.4) | ||||
| >4 | 29(52.7) | 229(55.7) | 261(66.8) | 261(32.6) | ||||
| Location | 0.120 | 0.041 | 0.619 | |||||
| Lower | 44(80.0) | 265(64.5) | 249(64.7) | 571(71.4) | ||||
| Middle | 5(9.1) | 56(13.6) | 80(19.4) | 117(14.6) | ||||
| Upper | 6(10.9) | 71(17.3) | 43(11.0) | 100(12.5) | ||||
| ≥2/3 stomach | 0(0.0) | 19(4.6) | 19(4.9) | 12(1.5) | ||||
| pT stage | 0.493 | 0.181 | <0.001 | |||||
| T1 | 6(9.1) | 31(7.5) | 14(3.6) | 344(43.0) | ||||
| T2 | 5(10.9) | 86(20.9) | 58(14.8) | 155(19.4) | ||||
| T3 | 26(47.3) | 166(40.4) | 152(38.9) | 201(25.1) | ||||
| T4 | 18(32.7) | 128(31.1) | 167(42.7) | 100(12.5) | ||||
| pN stage | 0.058 | <0.001 | -- | |||||
| N0 | -- | -- | -- | 800(100.0) | ||||
| N1 | 37(67.3) | 221(53.8) | 30(7.7) | – | ||||
| N2 | 13(23.6) | 134(32.6) | 129(33.0) | – | ||||
| N3a | 5(9.1) | 46(11.2) | 162(41.4) | – | ||||
| N3b | 0(0.0) | 10(2.4) | 70(17.9) | – | ||||
| Borrmann type | 0.141 | 0.001 | <0.001 | |||||
| Borrmann I | 9(16.4) | 48(11.7) | 18(4.6) | 360(45.0) | ||||
| Borrmann II | 5(9.1) | 52(12.7) | 60(15.3) | 132(16.5) | ||||
| Borrmann III | 41(74.5) | 285(69.3) | 282(72.1) | 288(36.0) | ||||
| Borrmann IV | 0(0.0) | 26(6.3) | 31(7.9) | 20(2.5) | ||||
| Lauren type | 0.306 | 0.769 | 0.023 | |||||
| Intestinal | 25(45.5) | 217(52.8) | 186(47.6) | 488(61.0) | ||||
| Diffuse | 30(54.5) | 194(47.2) | 205(52.4) | 312(39.0) | ||||
| Histology | 0.015 | 0.011 | 0.049 | |||||
| Middle&High | 25(45.5) | 120(29.2) | 112(28.6) | 260(32.5) | ||||
| Low | 30(54.5) | 291(70.8) | 279(71.4) | 540(67.5) | ||||
| Gastrectomy type | 0.562 | 0.060 | 0.479 | |||||
| Subtotal | 48(87.3) | 344(83.7) | 294(75.2) | 723(90.4) | ||||
| Total | 7(12.7) | 67(16.3) | 97(24.8) | 77(9.6) | ||||
| Lymphovascular invasion | 0.858 | 0.876 | 0.308 | |||||
| NO | 43(78.2) | 328(79.8) | 302(77.2) | 668(83.5) | ||||
| YES | 12(21.8) | 83(20.2) | 89(22.8) | 132(16.5) | ||||
| RLNs | 0.123 | 0.698 | 0.013 | |||||
| <15 | 10(18.2) | 115(28.0) | 63(16.1) | 276(34.5) | ||||
| ≥15 | 45(81.8) | 296(72.0) | 328(83.9) | 524(65.5) | ||||
Significant p values are in bold.
PT peritumoral, EP extraperitumoral, RLNs retrieved lymph nodes.