Table 1 Baseline characteristics of 2129 patients with SCLC
Characteristic | All patients (n = 2129) | Surgery (n = 387) | RT (n = 1032) | P b | Surgery + RT (n = 154) | No surgery or RT (n = 556) |
|---|---|---|---|---|---|---|
Age (years)a | 68.3 ± 9.9 | 67.8 ± 9.4 | 67.6 ± 9.7 | 0.837 | 63.8 ± 8.5 | 71.3 ± 10.2 |
Race | 0.011 | |||||
White | 1875 (88.1) | 355 (91.7) | 886 (85.9) | 146 (94.8) | 488 (87.8) | |
Black | 173 (8.1) | 22 (5.7) | 94 (9.1) | 6 (3.9) | 51 (9.2) | |
Others | 81 (3.8) | 10 (2.6) | 52 (5.0) | 2 (1.3) | 17 (3.1) | |
Sex | 0.965 | |||||
Male | 988 (46.4) | 179 (46.3) | 476 (46.1) | 66 (42.9) | 267 (48.0) | |
Female | 1141 (53.6) | 208 (53.7) | 556 (53.9) | 88 (57.1) | 289 (52.0) | |
Laterality of tumor location | 0.740 | |||||
Left lung | 927 (43.5) | 169 (43.7) | 451 (43.7) | 68 (44.2) | 239 (43.0) | |
Right lung | 1191 (55.9) | 217 (56.1) | 575 (55.7) | 85 (55.2) | 314 (56.5) | |
Others | 11 (0.5) | 1 (0.3) | 6 (0.6) | 1 (0.6) | 3 (0.5) | |
Surgery methodc | 0.327d | |||||
Pneumonectomy | – | 11 (2.8) | – | 2 (1.3) | – | |
Lobectomy | – | 271 (70.0) | – | 102 (66.2) | – | |
Sub-lobectomy | – | 103 (26.6) | – | 50 (32.5) | – | |
T category | < 0.001 | |||||
T1 | 1001 (47.0) | 233 (60.2) | 441 (42.7) | 89 (57.8) | 238 (42.8) | |
T2 | 839 (39.4) | 133 (34.4) | 421 (40.8) | 52 (33.8) | 233 (41.9) | |
T3 | 289 (13.6) | 21 (5.4) | 170 (16.5) | 13 (8.4) | 85 (15.3) | |
N category | < 0.001 | |||||
N0 | 1610 (75.6) | 324 (83.7) | 736 (71.3) | 96 (62.3) | 454 (81.7) | |
N1 | 519 (24.4) | 63 (16.3) | 296 (28.7) | 58 (37.7) | 102 (18.3) | |
TNM stage | < 0.001 | |||||
T1N0 | 723 (34.0) | 198 (51.2) | 283 (27.4) | 56 (36.4) | 186 (33.5) | |
T2N0 | 598 (28.1) | 105 (27.1) | 283 (27.4) | 27 (17.5) | 183 (32.9) | |
T3N0 | 289 (13.6) | 21 (5.4) | 170 (16.5) | 13 (8.4) | 85 (15.3) | |
T1-2N1 | 519 (24.4) | 63 (16.3) | 296 (28.7) | 58 (37.7) | 102 (18.3) |