|
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)
|
- SCLC small cell lung cancer, RT radiotherapy
- aThese data are presented as mean ± standard deviation (SD); other data are all presented as the number of patients, followed by the percentage in parentheses
- bComparisons between surgery and radiotherapy groups, except for the comparison of the surgery method
- cFor patients who underwent surgery, surgery information was unavailable for two patients
- dComparisons between surgery and surgery + RT groups
