Research Article
Elderly Patients with Nondistant Metastatic Pancreatic Head Adenocarcinoma Cannot Benefit from More Radical Surgery
Table 1
Baseline characteristics of all cases.
| | Terms | No. of patients (%) | -value | | Nonsurgery (N = 2333) | Surgery (N = 984) |
| | Marital status (%) | | | <0.001 | | Unmarried | 1037 (44.4) | 336 (34.5) | | Married | 1296 (55.6) | 648 (65.9) | | Race (%) | | | <0.001 | | White | 1839 (78.8) | 842 (85.6) | | Black | 274 (11.7) | 75 (7.6) | | American Indian/Alaska Native | 18 (0.8) | 1 (0.1) | | Asian or Pacific Islander | 202 (8.7) | 66 (6.7) | | Sex (%) | | | 0.016 | | Male | 1056 (45.3) | 491 (49.9) | | Female | 1277 (54.7) | 493 (50.1) | | Grade (%) | | | <0.001 | | Well differentiated; grade I | 84 (3.6) | 71 (7.2) | | Moderately differentiated; grade II | 193 (8.3) | 417 (43.7) | | Poorly differentiated; grade III | 185 (7.9) | 356 (35.6) | | Undifferentiated; grade IV | 13 (0.6) | 10 (1.0) | | Unevaluated | 1858 (79.6) | 130 (13.2) | | T (%) | | | <0.001 | | T1a | 3 (0.1) | 10 (1.0) | | T1b | 9 (0.4) | 11 (1.1) | | T1c | 231 (9.9) | 156 (15.9) | | T2 | 1197 (51.3) | 604 (61.4) | | T3 | 408 (17.5) | 167 (17.0) | | T4 | 485 (20.8) | 36 (3.6) | | N (%) | | | <0.001 | | N0 | 2259 (96.8) | 368 (37.4) | | N1 | 72 (3.1) | 364 (37.0) | | N2 | 2 (0.1) | 252 (25.6) | | Radiation (%) | | | <0.001 | | None | 1556 (66.7) | 580 (58.9) | | Yes | 777 (33.3) | 404 (41.1) | | Chemotherapy (%) | | | <0.001 | | None | 1010 (43.3) | 267 (27.1) | | Yes | 1323 (56.7) | 717 (72.9) | | Age, years | | | <0.001 | | Mean (SD) | 75.55 (8.70) | 70.61 (6.67) | | Diagnosis year | | | <0.001 | | 2004–2006 | 380 (16.3) | 208 (21.1) | | 2007–2009 | 490 (21.0) | 261 (26.5) | | 2010–2012 | 687 (29.4) | 260 (26.4) | | 2013–2015 | 776 (33.3) | 255 (26.0) | | Tumor size | | | <0.001 | | Mean (SD) | 35.13 (17.79) | 31.96 (13.87) |
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