1.
Baseline characteristics of all patients analyzed and patients with single IPA identified
| Variables | n (%) | P | |||
| All patients analyzed (N=419) | Patients with single IPA identified (N=398) | ||||
| Originated from GDA (N=154) | Originated from RGEA (N=114) | Originated from ASPDA (N=130) | |||
| IPA, infra-pyloric artery; GDA, gastroduodenal artery; RGEA, right gastroepiploic artery; ASPDA, anterior superior pancreatico-duodenal artery; IQR, interquartile range; TG, total gastrectomy; DG, distal gastrectomy; OP, open surgery; LA, laparoscopic-assisted surgery; TL, totally laparoscopic surgery; EGJ, esophagogastric junction; U, upper; M, middle; L, lower. | |||||
| Sex | 0.533 | ||||
| Male | 309 (73.7) | 109 (70.8) | 86 (75.4) | 99 (76.2) | |
| Female | 110 (26.3) | 45 (29.2) | 28 (24.6) | 31 (23.8) | |
| Age [median (IQR)] (year) | 62 (55−68) | 62 (54−68) | 61 (54−67) | 63 (56−68) | 0.597 |
| Gastrectomy | 0.553 | ||||
| TG | 168 (40.1) | 65 (42.2) | 47 (41.2) | 47 (36.2) | |
| DG | 251 (59.9) | 89 (57.8) | 67 (58.8) | 83 (63.8) | |
| Surgical approach | 0.003 | ||||
| OP | 90 (21.5) | 25 (16.2) | 24 (21.1) | 40 (30.8) | |
| LA | 166 (39.6) | 75 (48.7) | 37 (32.5) | 42 (32.3) | |
| TL | 163 (38.9) | 54 (35.1) | 53 (46.5) | 48 (36.9) | |
| Tumor location | 0.275 | ||||
| EGJ | 58 (13.8) | 15 (9.7) | 20 (17.5) | 19 (14.6) | |
| U | 53 (12.6) | 22 (14.3) | 14 (12.3) | 14 (10.8) | |
| M | 94 (22.4) | 40 (26.0) | 27 (23.7) | 23 (17.7) | |
| L | 211 (50.4) | 77 (50.0) | 52 (45.6) | 73 (56.2) | |
| UML | 2 (0.5) | 0 (0) | 1 (0.9) | 0 (0) | |
| cT stage | 0.184 | ||||
| cT1 | 45 (10.7) | 17 (11.0) | 6 (5.3) | 19 (14.6) | |
| cT2 | 93 (22.2) | 38 (24.7) | 28 (24.6) | 21 (16.2) | |
| cT3 | 125 (29.8) | 44 (28.6) | 37 (32.5) | 37 (28.5) | |
| cT4 | 153 (36.5) | 55 (35.7) | 41 (36.0) | 52 (40.0) | |
| cN stage | 0.120 | ||||
| cN0 | 149 (35.6) | 59 (38.3) | 33 (28.9) | 47 (36.2) | |
| cN1 | 100 (23.9) | 40 (26.0) | 31 (27.2) | 26 (20.0) | |
| cN2 | 83 (19.8) | 37 (24.0) | 19 (16.7) | 25 (19.2) | |
| cN3 | 56 (13.4) | 12 (7.8) | 18 (15.8) | 22 (16.9) | |
| cM stage | 0.177 | ||||
| cM0 | 405 (96.7) | 152 (98.7) | 108 (94.7) | 125 (96.2) | |
| cM1 | 14 (3.3) | 2 (1.3) | 6 (5.3) | 5 (3.8) | |
| Geographic area | 0.030 | ||||
| East China | 210 (50.1) | 84 (54.5) | 60 (52.6) | 57 (43.8) | |
| North China | 72 (17.2) | 17 (11.0) | 20 (17.5) | 32 (24.6) | |
| Northeastern China | 56 (13.4) | 19 (12.3) | 11 (9.6) | 23 (17.7) | |
| South China | 34 (8.1) | 17 (11.0) | 11 (9.6) | 2 (1.5) | |
| Northwestern China | 27 (6.4) | 10 (6.5) | 5 (4.4) | 10 (7.7) | |
| Central China | 14 (3.3) | 5 (3.2) | 5 (4.4) | 4 (3.1) | |
| Southwestern China | 5 (1.2) | 10 (6.5) | 2 (1.8) | 2 (1.5) | |