29 August 2020 : Database Analysis
Efficacy of Primary Tumor Resection in Metastatic Colorectal Cancer
Yong Huang1BCEF, Kuanxue Ge2BCD, Guangshun Fu1F, Junfeng Chu3AB, Wei Wei1AE*DOI: 10.12659/MSM.923501
Med Sci Monit 2020; 26:e923501
Table 1 The comparison of clinicopathologic characteristics of the whole cohort from the SEER database.
| Characteristics | No. of patients (%) | P | |
|---|---|---|---|
| No surgery of primary site (N=21520) | Surgery of primary site (N=26606) | ||
| Age at diagnosis (years) | <0.001 | ||
| <65 | 10150 (47.2) | 13068 (49.1) | |
| ≥65 | 11370 (52.8) | 13548 (50.9) | |
| Tumor location | <0.001 | ||
| Colon | 13458 (62.5) | 21362 (80.3) | |
| Rectum | 8062 (37.5) | 5244 (19.7) | |
| T stage | <0.001 | ||
| T1 | 3645 (16.9) | 685 (2.6) | |
| T2 | 235 (1.1) | 829 (3.1) | |
| T3 | 2494 (11.6) | 15351 (57.7) | |
| T4 | 3217 (14.9) | 9195 (34.6) | |
| Unknown | 11929 (55.4) | 546 (2.1) | |
| N stage | <0.001 | ||
| N0 | 8798 (40.9) | 5460 (20.5) | |
| N1 | 4528 (21.0) | 8699 (32.7) | |
| N2 | 633 (2.9) | 11941 (44.9) | |
| Unknown | 7561 (35.1) | 506 (1.9) | |
| Race | <0.001 | ||
| White | 16338 (75.9) | 20646 (77.6) | |
| Black | 3430 (15.9) | 3724 (14.0) | |
| Other | 1752 (8.1) | 2236 (8.4) | |
| Gender | <0.001 | ||
| Male | 12228 (56.8) | 14273 (53.6) | |
| Female | 9292 (43.2) | 12333 (46.4) | |
| Year of diagnosis | <0.001 | ||
| 2004 | 1671 (7.8) | 3101 (11.7) | |
| 2005 | 1697 (7.9) | 2872 (10.8) | |
| 2006 | 1780 (8.3) | 2934 (11.0) | |
| 2007 | 1979 (9.2) | 2758 (10.4) | |
| 2008 | 2077 (9.7) | 2740 (10.3) | |
| 2009 | 2281 (10.6) | 2520 (9.5) | |
| 2010 | 2277 (10.6) | 2581 (9.7) | |
| 2011 | 2495 (11.6) | 2472 (9.3) | |
| 2012 | 2586 (12.0) | 2361 (8.9) | |
| 2013 | 2677 (12.4) | 2267 (8.5) | |
| Chemotherapy | <0.001 | ||
| No | 9333 (43.4) | 10464 (39.3) | |
| Yes | 12187 (56.6) | 16142 (60.7) | |