Table 1. Baseline Characteristics of the study cohort according to Marital Status (N = 71,955).
| Characteristic | Married(n=41,126) | Unmarried(n=30,829) | P |
|---|---|---|---|
| Vital status | <0.001 | ||
| alive | 24,828(60.37%) | 14,597(47.35%) | |
| dead for colon cancer | 11,005(26.76%) | 9,749(31.62%) | |
| dead for other causes | 5,293(12.87%) | 6,483(21.03%) | |
| Age | 65.64±12.8 | 70.49±14.5 | <0.001 |
| Race | <0.001 | ||
| white | 33,542(81.56%) | 23,805(77.22%) | |
| Black | 3,625(8.81%) | 4,966(16.11%) | |
| Other | 3,959(9.63%) | 2,058(6.68%) | |
| Sex | <0.001 | ||
| Male | 23,982(58.31%) | 10,485(34.01%) | |
| female | 17,144(41.69%) | 20,344(65.99%) | |
| Tumor site | <0.001 | ||
| left | 17,034(41.42%) | 11,281(36.59%) | |
| right | 23,516(57.18%) | 19,004(61.64%) | |
| large intestine, NOS | 576(1.40%) | 544(1.76%) | |
| Grade | <0.001 | ||
| grade I | 3,911(9.51%) | 2,879(9.34%) | |
| grade II | 29,190(70.98%) | 21,436(69.53%) | |
| grade III | 7,441(18.09%) | 6,058(19.65%) | |
| grade IV | 584(1.42%) | 456(1.48%) | |
| Stage | <0.001 | ||
| stage 0/I | 9,870(24.00%) | 6,432(20.86%) | |
| stage II | 12,357(30.05%) | 10,353(33.58%) | |
| stage III | 12,729(30.95%) | 9,470(30.72%) | |
| stage IV | 6,170(15.00%) | 4,574(14.84%) | |
| Tumor stage | <0.001 | ||
| Tis/T0/Tx | 570(1.39%) | 363(1.18%) | |
| T1 | 5,070(12.33%) | 2,947(9.56%) | |
| T2 | 6,269(15.24%) | 4,364(14.16%) | |
| T3 | 24,103(58.61%) | 18,774(60.90%) | |
| T4 | 5,114(12.43%) | 4,381(14.21%) | |
| Nodal stage | 0.102 | ||
| N0 | 23,200(56.41%) | 17,637(57.21%) | |
| N1 | 10,247(24.92%) | 7,611(24.69%) | |
| N2 | 7,672(18.65%) | 5,573(18.08%) | |
| Nx | 7(0.02%) | 8(0.03%) | |
| Metastatic disease | 0.776 | ||
| M0 | 34,953(85.00%) | 26,252(85.15%) | |
| M1 | 6,170(15.0%) | 4,574(14.84%) | |
| Mx | 3(0.01%) | 3(0.01%) | |
| Lymph node rates | 0.096 | ||
| 0.00≤LNR<0.17 | 30,521(74.21%) | 22,990(74.57%) | |
| 0.17≤LNR<0.41 | 5,668(13.78%) | 4,301(13.95%) | |
| 0.41≤LNR<0.69 | 2,839(6.90%) | 1,987(6.44%) | |
| 0.69≤LNR | 2,098(5.10%) | 1,551(5.03%) |
Abbreviations: NOS, not otherwise specified; LNR, lymph node rates.