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Table 1 Patient characteristics

From: Population-based SEER analysis of survival in colorectal cancer patients with or without resection of lung and liver metastases

 Total
N = 10,325
ResectionMetastasis
No Resection
N = 7419
Resection
N = 2906
PaLiver
N = 8195
Lung
N = 807
Both
N = 1323
Pa
ResectionNo7419 (71.9%)7419 (100%)5695 (69.5%)663 (82.2%)1061 (80.2%)< 0.001
Yes2906 (28.1%)2906 (100%) 2500 (30.5%)144 (17.8%)262 (19.8%) 
MetastasisLiver only8195 (79.4%)5695 (76.8%)2500 (86.0%)< 0.0018195 (100%)
Lung only807 (7.8%)663 (8.9%)144 (5.0%) 807 (100%) 
Liver and Lung1323 (12.8%)1061 (14.3%)262 (9.0%) 1323 (100%) 
Tumor localizationRight colon3485 (33.8%)2602 (35.1%)883 (30.4%)< 0.0012808 (34.3%)220 (27.3%)457 (34.5%)< 0.001
Transverse1401 (13.6%)1005 (13.5%)396 (13.6%) 1140 (13.9%)98 (12.1%)163 (12.3%) 
Left colon3311 (32.1%)2346 (31.6%)965 (33.2%) 2666 (32.5%)231 (28.6%)414 (31.3%) 
Rectosigmoid966 (9.4%)680 (9.2%)286 (9.8%) 736 (9.0%)88 (10.9%)142 (10.7%) 
Rectum1162 (11.3%)786 (10.6%)376 (12.9%) 845 (10.3%)170 (21.1%)147 (11.1%) 
T-StageT1 to T36643 (64.3%)4727 (63.7%)1916 (65.9%)0.0345348 (65.3%)532 (65.9%)763 (57.7%)< 0.001
T43682 (35.7%)2692 (36.3%)990 (34.1%) 2847 (34.7%)275 (34.1%)560 (42.3%) 
N-StageN02103 (20.4%)1439 (19.4%)664 (22.8%)< 0.0011654 (20.2%)230 (28.5%)219 (16.6%)< 0.001
N+8222 (79.6%)5980 (80.6%)2242 (77.2%) 6541 (79.8%)577 (71.5%)1104 (83.4%) 
GradeG1/27715 (74.7%)5450 (73.5%)2265 (77.9%)< 0.0016090 (74.3%)615 (76.2%)1010 (76.3%)0.118
G3/42610 (25.3%)1969 (26.5%)641 (22.1%) 2105 (25.7%)192 (23.8%)313 (23.7%) 
Chemo- and/orNo2842 (27.5%)2294 (30.9%)548 (18.9%)< 0.0012216 (27.0%)235 (29.1%)391 (29.6%)0.437
RadiotherapyYes7483 (72.5%)5125 (69.1%)2358 (81.1%) 5979 (73.0%)572 (70.9%)932 (70.4%) 
Year of diagnosis2010–20125304 (51.4%)3915 (52.8%)1389 (47.8%)< 0.0014279 (52.2%)365 (45.2%)660 (49.9%)0.005
2013–20155021 (48.6%)3504 (47.2%)1517 (52.2%) 3916 (47.8%)442 (54.8%)663 (50.1%) 
Age (years)< 501799 (17.4%)1130 (15.2%)669 (23.0%)< 0.0011474 (18.0%)120 (14.9%)205 (15.5%)0.005
50–644065 (39.4%)2843 (38.3%)1222 (42.1%) 3241 (39.5%)285 (35.3%)539 (40.7%) 
65–793247 (31.4%)2448 (33.0%)799 (27.5%) 2525 (30.8%)285 (35.3%)437 (33.0%) 
80+1214 (11.8%)998 (13.5%)216 (7.4%) 955 (11.7%)117 (14.5%)142 (10.7%) 
GenderMale5693 (55.1%)4159 (56.1%)1534 (52.8%)0.0034585 (55.9%)387 (48.0%)721 (54.5%)0.003
Female4632 (44.9%)3260 (43.9%)1372 (47.2%) 3610 (44.1%)420 (52.0%)602 (45.5%) 
EthnicityCaucasian7787 (75.4%)5576 (75.2%)2211 (76.1%)0.3366237 (76.1%)591 (73.2%)959 (72.5%)0.117
African-American1555 (15.1%)1117 (15.1%)438 (15.1%) 1219 (14.9%)115 (14.3%)221 (16.7%) 
Other/Unknown983 (9.5%)726 (9.8%)257 (8.8%) 739 (9.0%)101 (12.5%)143 (10.8%) 
Marital statusMarried5583 (54.1%)3925 (52.9%)1658 (57.1%)< 0.0014501 (54.9%)399 (49.4%)683 (51.6%)0.061
Single/Widowed3057 (29.6%)2256 (30.4%)801 (27.6%) 2398 (29.3%)259 (32.1%)400 (30.2%) 
Other/Unknown1685 (16.3%)1238 (16.7%)447 (15.4%) 1296 (15.8%)149 (18.5%)240 (18.1%) 
  1. n (percent)
  2. aChi-squared test