Variable | No. (%) of patients* | p value | No. (%) of patients* | p value | No. (%) of patients | p value | |||
---|---|---|---|---|---|---|---|---|---|
Chemotherapy n = 256 | No chemotherapy n = 461 | Radiation therapy† n = 342 | No radiation therapy n = 51 | Hormonal therapy‡ n = 390 | No hormonal therapy n = 146 | ||||
Age at diagnosis, yr | |||||||||
< 51 | 99 (38.7) | 50 (10.8) | < 0.001 | 63 (18.) | 5 (9.8) | < 0.001 | 89 (22.8) | 16 (11.0) | < 0.001 |
51–70 | 135 (52.7) | 228 (49.4) | 199 (58.) | 20 (39.2) | 210 (53.8) | 52 (35.6) | |||
> 70 | 22 (8.6) | 183 (39.7) | 80 (23.) | 26 (51.0) | 91 (23.3) | 78 (53.4) | |||
Obese | |||||||||
Yes | 91 (36.2) | 161 (37.0) | 0.8 | 130 (39.) | 16 (34.0) | 0.49 | 140 (37.0) | 51 (37.2) | > 0.99 |
No | 160 (63.7) | 274 (63.0) | 201 (61.) | 31 (66.0) | 238 (63.0) | 86 (62.8) | |||
Employment | |||||||||
Employed | 156 (61.7) | 120 (26.7) | < 0.001 | 143 (43.) | 9 (18.0) | 0.001 | 169 (43.9) | 27 (19.1) | < 0.001 |
Not employed | 97 (38.3) | 330 (73.3) | 191 (57.) | 41 (82.0) | 216 (56.1) | 114 (80.8) | |||
Marital status | |||||||||
Married | 185 (72.3) | 259 (56.4) | < 0.001 | 228 (67.) | 28 (4.9.) | 0.1 | 242 (62.2) | 83 (57.2) | 0.3 |
Not married | 71 (27.7) | 200 (43.6) | 114 (33.) | 23 (45.1) | 147 (37.8) | 62 (42.8) | |||
First-degree relative with breast cancer | |||||||||
Yes | 47 (18.8) | 111 (26.2) | 0.03 | 79 (24.) | 13 (31.7) | 0.2 | 85 (22.8) | 36 (27.5) | 0.3 |
No | 203 (81.2) | 313 (73.8) | 255 (76.) | 28 (68.3) | 287 (77.2) | 95 (72.5) | |||
Smoking status | |||||||||
Smoker/previous smoker | 118 (46.6) | 169 (36.9) | < 0.001 | 137 (40.) | 15 (30.0) | 0.2 | 178 (45.8) | 50 (34.7) | 0.02 |
Never smoked | 135 (53.4) | 289 (63.1) | 205 (60.) | 35 (70.0) | 211 (54.2) | 94 (65.3) | |||
No. of comorbidities | |||||||||
0 | 93 (36.3) | 90 (19.5) | < 0.001 | 100 (29.) | 5 (9.8) | 0.003 | 97 (24.9) | 28 (19.2) | 0.2 |
≥ 1 | 163 (63.7) | 371 (80.5) | 242 (71.) | 46 (91.2) | 293 (75.1) | 118 (80.8) | |||
Income quintile | |||||||||
1 | 49 (19.2) | 98 (21.5) | 0.2 | 67 (20.) | 11 (21.6) | 0.9 | 76 (19.6) | 32 (22.4) | 0.2 |
2 | 46 (18.0) | 94 (20.6) | 57 (17.) | 9 (17.6) | 69 (17.8) | 36 (25.2) | |||
3 | 45 (17.6) | 102 (22.4) | 71 (21.) | 13 (25.5) | 85 (21.9) | 29 (20.3) | |||
4 | 56 (22.0) | 83 (18.2) | 68 (20.) | 9 (17.6) | 80 (20.6) | 23 (16.1) | |||
5 | 59 (23.1) | 79 (17.3) | 74 (22.) | 9 (17.6) | 78 (20.1) | 23 (16.1) | |||
% of census tract population who completed college or university | |||||||||
> 40 | 116 (45.5) | 186 (40.5) | 0.4 | 146 (43.) | 13 (25.5) | 0.05 | 101 (26.0) | 49 (34.0) | 0.01 |
31–40 | 82 (32.2) | 154 (33.6) | 118 (35.) | 25 (49.0) | 123 (31.6) | 59 (41.0) | |||
< 31 | 57 (22.4) | 119 (25.9) | 76 (22.) | 13 (25.5) | 165 (42.4) | 36 (25.0) | |||
% of census tract population who immigrated in previous 5 yr | |||||||||
> 30 | 65 (25.5) | 133 (29.0) | 0.6 | 89 (26.) | 18 (35.3) | 0.1 | 101 (26.0) | 43 (29.9) | 0.6 |
21–30 | 83 (32.5) | 140 (30.5) | 105 (31.) | 19 (37.2) | 123 (31.6) | 46 (31.9) | |||
< 21 | 107 (42.0) | 186 (40.5) | 146 (43.) | 14 (27.4) | 165 (42.4) | 55 (38.2) | |||
Previous breast cancer | |||||||||
Yes | 22 (8.6) | 64 (13.9) | 0.04 | 26 (8.) | 3 (5.9) | 0.7 | 36 (9.2) | 24 (16.4) | 0.02 |
No | 234 (91.4) | 397 (86.1) | 316 (92.) | 48 (94.1) | 354 (90.8) | 122 (83.6) | |||
Disease stage (TNM) | |||||||||
0–1 | 41 (16.0) | 280 (60.7) | < 0.001 | 213 (62.) | 28 (54.9) | 0.3 | 121 (31.0) | 96 (65.8) | < 0.001 |
2 | 89 (34.8) | 131 (28.4) | 112 (33.) | 18 (35.3) | 145 (37.2) | 40 (27.4) | |||
3–4 | 126 (49.2) | 50 (10.8) | 17 (5.) | 5 (9.8) | 124 (31.8) | 10 (6.8) |