Research Article
Elderly Patients with Nondistant Metastatic Pancreatic Head Adenocarcinoma Cannot Benefit from More Radical Surgery
Table 2
Baseline characteristics of propensity-score-matched cases.
| | Terms | No. of patients (%) | -value | | Nonsurgery (N = 352) | Surgery (N = 352) |
| | Marital status (%) | | | 0.277 | | Unmarried | 141 (40.1) | 126 (35.8) | | Married | 211 (59.9) | 226 (64.2) | | Race (%) | | | 0.140 | | White | 276 (78.4) | 293 (83.2) | | Black | 45 (12.8) | 28 (8.0) | | American Indian/Alaska Native | 0 (0.0) | 1 (0.3) | | Asian or Pacific Islander | 31 (8.8) | 30 (8.5) | | Sex (%) | | | 0.651 | | Male | 164 (46.6) | 171 (48.6) | | Female | 188 (53.4) | 181 (51.4) | | Grade (%) | | | <0.001 | | Well differentiated; grade I | 75 (21.3) | 17 (4.8) | | Moderately differentiated; grade II | 115 (32.7) | 118 (33.5) | | Poorly differentiated; grade III | 43 (12.1) | 120 (34.1) | | Undifferentiated; grade IV | 3 (0.9) | 4 (1.1) | | Unevaluated | 116 (33.0) | 93 (26.5) | | T (%) | | | 0.320 | | T1a | 3 (0.9) | 2 (0.6) | | T1b | 1 (0.3) | 3 (0.9) | | T1c | 62 (17.6) | 66 (18.8) | | T2 | 199 (56.5) | 198 (56.2) | | T3 | 46 (13.1) | 57 (16.1) | | T4 | 41 (11.6) | 26 (7.4) | | N (%) | | | 0.312 | | N0 | 291 (82.7) | 293 (83.2) | | N1 | 59 (16.8) | 53 (15.1) | | N2 | 2 (0.5) | 6 (1.7) | | Radiation (%) | | | 0.312 | | None | 226 (64.2) | 212 (60.2) | | Yes | 126 (35.8) | 140 (39.8) | | Chemotherapy (%) | | | 0.203 | | None | 128 (36.4) | 111 (31.5) | | Yes | 224 (63.6) | 241 (68.5) | | Age, years | | | <0.001 | | <73 | 179 (50.9) | 197 (56.0) | | 73–82 | 114 (32.3) | 133 (37.8) | | >82 | 59 (16.8) | 22 (6.2) | | Diagnosis year | | | 0.038 | | 2004–2006 | 96 (27.3) | 66 (18.8) | | 2007–2009 | 85 (24.1) | 95 (27.0) | | 2010–2012 | 94 (26.7) | 94 (26.7) | | 2013–2015 | 77 (21.9) | 97 (27.5) | | Tumor size (mm) | | | 0.017 | | <26 | 103 (29.3) | 133 (37.8) | | 26–41 | 194 (55.1) | 157 (44.6) | | >41 | 55 (15.6) | 62 (17.6) |
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