Table 1.
Baseline characteristics of patients undergoing limited D0/D1 lymphadenectomy or more extensive D1+/D2 dissection
| D0/D1 (n = 1206) | D1+/D2 (n = 471) | Overall (n = 1677) | P † | |
|---|---|---|---|---|
| Age (years) * | 70(11) | 65(12) | 69(12) | < 0·001§ |
| Sex | 0·602 | |||
| M | 698 (57·9) | 266 (56·5) | 964 (57·5) | |
| F | 508 (42·1) | 205 (43·5) | 713 (42·5) | |
| BMI (kg/m2) * | 25·1(4·45) | 25·2(4·43) | 25·2(4·44) | 0·682§ |
| ASA grade | < 0·001‡ | |||
| I | 310 (25·7) | 168 (35·7) | 478 (28·5) | |
| II | 591 (49·0) | 223 (47·3) | 814 (48·5) | |
| III | 252 (20·9) | 66 (14·0) | 318 (19·0) | |
| IV | 24 (2·0) | 3 (0·6) | 27 (1·6) | |
| V | 0 (0) | 0 (0) | 0 (0) | |
| Missing | 29 (2·4) | 11 (2·3) | 40 (2·4) | |
| Clinical tumour stage | < 0·001 | |||
| I | 402 (33·3) | 120 (25·5) | 522 (31·1) | |
| II | 312 (25·9) | 167 (35·5) | 479 (28·6) | |
| III | 149 (12·4) | 100 (21·2) | 249 (14·8) | |
| IV | 27 (2·2) | 17 (3·6) | 44 (2·6) | |
| Missing | 316 (26·2) | 67 (14·2) | 383 (22·8) | |
| Charlson Co‐morbidity Index | 0·655 | |||
| 0–1 | 400 (33·2) | 147 (31·2) | 547 (32·6) | |
| 2 | 195 (16·2) | 83 (17·6) | 278 (16·6) | |
| ≥ 3 | 611 (50·7) | 241 (51·2) | 852 (50·8) | |
| Years of education | < 0·001 | |||
| ≤ 9 | 474 (39·3) | 149 (31·6) | 623 (37·1) | |
| 10–12 | 455 (37·7) | 193 (41·0) | 648 (38·6) | |
| > 12 | 186 (15·4) | 111 (23·6) | 297 (17·7) | |
| Missing | 91 (7·5) | 18 (3·8) | 109 (6·5) | |
| Tumour location | < 0·001 | |||
| GOJ Siewert III | 37 (3·1) | 52 (11·0) | 89 (5·3) | |
| Upper | 39 (3·2) | 34 (7·2) | 73 (4·4) | |
| Middle | 386 (32·0) | 205 (43·5) | 591 (35·2) | |
| Lower | 625 (51·8) | 123 (26·1) | 748 (44·6) | |
| Whole | 25 (2·1) | 23 (4·9) | 48 (2·9) | |
| Missing | 94 (7·8) | 34 (7·2) | 128 (7·6) | |
| Calendar year of surgery | < 0·001 | |||
| 2006–2009 | 468 (38·8) | 98 (20·8) | 566 (33·8) | |
| 2010–2013 | 469 (38·9) | 179 (38·0) | 648 (38·6) | |
| 2014–2017 | 269 (22·3) | 194 (41·2) | 463 (27·6) |
Values in parentheses are percentages unless indicated otherwise;
*
values are mean(s.d.). GOJ, gastro‐oesophageal junction.
†
χ2 test, except
‡
Fisher's exact test and
§
Student's t test.