Research Article
The Impact of Surgery on Long-Term Survival of Patients with Primary Gastric Diffuse Large B-Cell Lymphoma: A SEER Population-Based Study
Table 1
Baseline patient characteristics.
| | Before matching | | After matching | | | Variable | Surgery () | No surgery () | | Surgery () | No surgery () | |
| | Age | | | 0.146 | | | 0.446 | | <65 | 127 (46.2%) | 1113 (46.9%) | | 99 (47.1%) | 848 (50.5%) | | | 65-74 | 75 (27.3%) | 533 (22.5%) | | 48 (22.9%) | 396 (23.6%) | | | ≤75 | 73 (26.5%) | 726 (30.6%) | | 63 (30%) | 436 (26%) | | | Gender | | | 0.308 | | | 0.575 | | Male | 152 (55.3%) | 1387 (58.5%) | | 118 (56.2%) | 978 (58.2%) | | | Female | 123 (44.7%) | 985 (41.5%) | | 92 (43.8%) | 702 (41.8%) | | | Race | | | 0.088 | | | 0.331 | | White | 223 (81.1%) | 1815 (76.5%) | | 175 (83.3%) | 1353 (80.5%) | | | Other | 52 (18.9%) | 557 (23.5%) | | 35 (16.7%) | 327 (19.5%) | | | Tumor location | | | 0.024 | | | 0.136 | | Upper third | 20 (7.3%) | 316 (13.3%) | | 18 (8.6%) | 226 (13.5%) | | | Mid and low third | 115 (41.8%) | 861 (36.3%) | | 86 (41%) | 604 (36%) | | | Overlapping stomach | 33 (12%) | 259 (10.9%) | | 28 (13.3%) | 191 (11.4%) | | | Unknown location | 107 (38.9%) | 936 (39.5%) | | 78 (37.1%) | 659 (39.2%) | | | Ann Arbor stage | | | <0.001 | | | 0.706 | | I | 113 (41.1%) | 1054 (44.4%) | | 102 (48.6%) | 770 (45.8%) | | | II | 88 (32%) | 494 (20.8%) | | 47 (22.4%) | 436 (26%) | | | III | 12 (4.4%) | 199 (8.4%) | | 9 (4.3%) | 78 (4.6%) | | | IV | 62 (22.5%) | 625 (26.3%) | | 52 (24.8%) | 396 (23.6%) | | | Radiation | | | <0.001 | | | 0.666 | | Yes | 20 (7.3%) | 482 (20.3%) | | 20 (9.5%) | 145 (8.6%) | | | No | 255 (92.7%) | 1890 (79.7%) | | 190 (90.5%) | 1535 (91.4%) | | | Chemotherapy | | | <0.001 | | | 0.894 | | Yes | 175 (63.6%) | 1900 (80.1%) | | 159 (75.7%) | 1279 (76.1%) | | | No/unknown | 100 (36.4%) | 472 (19.9%) | | 51 (24.3%) | 401 (23.9%) | |
|
|
