Table 1.
Baseline demographic and tumor characteristics of patients in SEER database
| Characteristic | Total | Married | Unmarried | P value+ |
|---|---|---|---|---|
| N (%) | N (%) | N (%) | ||
| Age | 0.002 | |||
| ≤ 56 | 649 (48.36%) | 366 (52.44%) | 283 (43.94%) | |
| >56 | 693 (51.64%) | 332 (47.56%) | 361 (56.06%) | |
| Race | < 0.001 | |||
| White | 1042 (77.65%) | 581 (83.24%) | 461 (71.58%) | |
| Black | 228 (16.99%) | 78 (11.17%) | 150 (23.29%) | |
| Other* | 72 (5.37%) | 39 (5.59%) | 33 (5.12%) | |
| Grade | 0.160 | |||
| Grade I/II | 262 (19.52%) | 141 (20.20%) | 121 (18.79%) | |
| Grade III/IV | 773 (57.60%) | 412 (59.03%) | 361 (56.06%) | |
| Unknown | 307 (22.88%) | 145 (20.77%) | 162 (25.16%) | |
| AJCC stage | < 0.001 | |||
| IIIA | 706 (52.61%) | 385 (55.16%) | 321 (49.84%) | |
| IIIB | 225 (16.77%) | 130 (18.62%) | 95 (14.75%) | |
| IV | 411 (30.63%) | 183 (26.22%) | 228 (35.40%) | |
| HoR | 0.033 | |||
| Positive | 605 (45.08%) | 337 (48.28%) | 268 (41.61%) | |
| Negative | 603 (44.93%) | 300 (42.98%) | 303 (47.05%) | |
| Unknown | 134 (9.99%) | 61 (8.74%) | 73 (11.34%) | |
| HER-2 | 0.967 | |||
| Positive | 40 (2.98%) | 20 (2.87%) | 20 (3.11%) | |
| Negative | 69 (5.14%) | 36 (5.16%) | 33 (5.12%) | |
| Unknown | 1233 (91.88%) | 642 (91.98%) | 591 (91.77%) | |
| Surgery | < 0.001 | |||
| No surgery | 378 (28.17%) | 150 (21.49%) | 228 (35.40%) | |
| Partial mastectomy | 62 (4.62%) | 25 (3.58%) | 37 (5.75%) | |
| Simple mastectomy | 127 (9.46%) | 74 (10.60%) | 53 (8.23%) | |
| Radical mastectomy | 775 (57.75%) | 449 (64.33%) | 326 (50.62%) | |
| Chemotherapy | < 0.001 | |||
| No/unknown | 193 (14.38%) | 65 (9.31%) | 128 (19.88%) | |
| Yes | 1149 (85.62%) | 633 (90.69%) | 516 (80.12%) | |
| Radiotherapy | < 0.001 | |||
| No/unknown | 683 (50.89%) | 325 (46.56%) | 358 (55.59%) | |
| Yes | 659 (49.11%) | 373 (53.44%) | 286 (44.41%) |
HoR hormone receptor
*Other includes American Indian/Alaska native, Asian/Pacific Islander, and unknown
+The comparison results between married and unmarried group