Table 1.
Clinical, surgical, and demographic patient characteristics by surgical technique compared in the matched cohort.
| Matched Cohort | |||
|---|---|---|---|
| Laparoscopic n = 624 |
Open n = 624 |
p-Value | |
| Age, years | 0.985 # | ||
| median (IQR) | 63 (6–72) | 64 (56–72) | |
| mean (SD) | 63.2 (11.3) | 63 (11.9) | |
| Gender, n (%) | 0.849 | ||
| Male | 466 (73.1) | 453 (72.6) | |
| Female | 168 (26.9) | 171 (27.4) | |
| Geographic area, n (%) | 0.829 | ||
| East | 504 (80.8) | 507 (81.3) | |
| West | 120 (19.2) | 117 (18.8) | |
| Year of surgery, n (%) | 1.000 | ||
| 2000–2007 | 16 (2.6) | 16 (2.6) | |
| 2008–2014 | 608 (97.4) | 608 (97.4) | |
| Body Mass Index (BMI) | 0.350 # | ||
| median (IQR) | 22 (20–24) | 22 (20–24) | |
| mean (SD) | 22.3 (3.1) | 22.1 (3.3) | |
| ASA score, n (%) | 1.000 | ||
| I | 295 (47.3) | 295 (47.3) | |
| II | 245 (39.3) | 245 (39.3) | |
| III | 84 (13.5) | 84 (13.5) | |
| Comorbidities, n (%) | 0.816 | ||
| No | 388 (62.2) | 384 (61.5) | |
| Yes | 236 (37.8) | 240 (38.5) | |
| Type of resection, n (%) | 0.955 | ||
| Distal gastrectomy | 293 (47) | 294 (47.1) | |
| Total gastrectomy | 331 (53) | 330 (52.9) | |
| Tumor location, n (%) | 0.731 | ||
| Distal third | 290 (46.5) | 284 (45.5) | |
| Middle third | 149 (23.9) | 161 (25.8) | |
| Upper third | 185 (29.6) | 179 (28.7) | |
| pTNM AJCC stage, 8th edition, n (%) | 0.860 | ||
| IA | 101 (16.2) | 91 (14.6) | |
| IB | 49 (7.9) | 43 (6.9) | |
| IIA | 67 (10.7) | 69 (11.1) | |
| IIB | 73 (11.7) | 68 (10.9) | |
| IIIA | 112 (17.9) | 117 (18.8) | |
| IIIB | 120 (19.2) | 117 (18.8) | |
| IIIC | 102 (16.3) | 119 (19.1) | |
| Histology, n (%) | 0.767 | ||
| Differentiated | 405 (64.9) | 400 (64.1) | |
| Poorly differentiated/undifferentiated | 219 (35.1) | 224 (35.9) | |
LG: laparoscopic gastrectomy; GO: open gastrectomy; n = number; # = Mann–Whitney U test; SD: standard deviation; IQR: interquartile range.