Table 1.
Baseline characteristic of male patients with HR positive breast cancer in SEER database, by marital status.
| Characteristic (%) | Total (%) | Married (%) | Unmarried (%) | P value |
|---|---|---|---|---|
| 3612 (100.0) | 2548 (70.5) | 1064 (29.5) | ||
| Age | 0.003 | |||
| <50 | 445 (12.3) | 283 (11.1) | 162 (15.2) | |
| 50–64 | 1259 (34.9) | 895 (35.1) | 364 (34.2) | |
| ≥65 | 1908 (52.8) | 1370 (53.8) | 538 (50.6) | |
| Race | <0.0001 | |||
| White | 2932 (81.2) | 2113 (82.9) | 819 (77.0) | |
| Black | 462 (12.8) | 252 (9.9) | 210 (19.7) | |
| Other | 202 (5.6) | 171 (6.7) | 31 (2.9) | |
| Unknown | 16 (0.4) | 12 (0.5) | 4 (0.4) | |
| Residence type | 0.935 | |||
| Metropolitan | 3238 (89.6) | 2287 (89.8) | 951 (89.4) | |
| Non-metropolitan | 360 (10.0) | 251 (9.9) | 109 (10.2) | |
| Unknown | 14 (0.4) | 10 (0.4) | 4 (0.4) | |
| Histology | 0.103 | |||
| Ductal | 3153 (87.3) | 2230 (87.5) | 923 (86.7) | |
| Lobular | 33 (0.9) | 28 (1.1) | 5 (0.5) | |
| Others | 426 (11.8) | 290 (11.4) | 136 (12.8) | |
| Grade | 0.369 | |||
| Well/moderately differentiated | 2208 (61.1) | 1574 (61.8) | 634 (59.6) | |
| Poorly/undifferentiated | 1183 (32.8) | 825 (32.4) | 358 (33.6) | |
| Unknown | 221 (6.1) | 149 (5.8) | 72 (6.8) | |
| Pathologic T stage | <0.0001 | |||
| T0–T1 | 1174 (32.5) | 891 (35.0) | 283 (26.6) | |
| T2 | 1166 (32.3) | 778 (30.5) | 388 (36.5) | |
| T3 | 139 (3.8) | 86 (3.4) | 53 (5.0) | |
| Unknown | 1133 (31.4) | 793 (31.1) | 340 (32.0) | |
| Pathologic N stage | <0.0001 | |||
| N0 | 1746 (48.3) | 1282 (50.3) | 464 (43.6) | |
| N1 | 1008 (27.9) | 729 (28.6) | 279 (26.2) | |
| N2 | 335 (9.3) | 227 (8.9) | 108 (10.2) | |
| N3 | 172 (4.8) | 109 (4.3) | 63 (5.9) | |
| Unknown | 351 (9.7) | 201 (7.9) | 150 (14.1) | |
| ER status | 0.192 | |||
| Negative | 31 (0.9) | 19 (0.7) | 12 (1.1) | |
| Positive | 3578 (99.1) | 2528 (99.2) | 1050 (98.7) | |
| Unknown | 3 (0.1) | 1 (0.0) | 2 (0.2) | |
| PR status | 0.549 | |||
| Negative | 374 (10.4) | 265 (10.4) | 109 (10.2) | |
| Positive | 3161 (87.5) | 2233 (87.6) | 928 (87.2) | |
| Unknown | 77 (2.1) | 50 (2.0) | 27 (2.5) | |
| HER2 status | 0.866 | |||
| Negative | 1130 (31.3) | 792 (31.1) | 338 (31.8) | |
| Positive | 144 (4.0) | 100 (3.9) | 44 (4.1) | |
| Unknown | 2338 (64.7) | 1656 (65.0) | 682 (64.1) | |
| Surgery | 0.013 | |||
| No | 101 (2.8) | 58 (2.3) | 43 (4.0) | |
| Yes | 3143 (87.0) | 2230 (87.5) | 913 (85.8) | |
| Unknown | 368 (10.2) | 260 (10.2) | 108 (10.2) | |
| Radiation | 0.605 | |||
| No | 2696 (74.6) | 1908 (74.9) | 788 (74.1) | |
| Yes | 916 (25.4) | 640 (25.1) | 276 (25.9) |
ER – estrogen receptor; HER2 – human epidermal growth factor receptor 2; PR – progesterone receptor. SEER – The Surveillance Epidemiology and End Results.