Table 4.
Breast cancer treatment according to the type of follow-up.
| Population n = 625 (%) | IBCG n = 155 (%) | PBCG n = 470 (%) | p- value | |
|---|---|---|---|---|
| Breast surgery | <0.0001 | |||
| No | 3 (0.2) | 0 (0) | 3 (0.6) | |
| Mastectomy | 293 (47) | 94 (60.6) | 199 (42.3) | |
| Breast-conserving surgery | 324 (52) | 58 (37.5) | 266 (56.7) | |
| Unknown | 5 (0.8) | 3 (1.9) | 2 (0.4) | |
| Axillary surgery | <0.0001 | |||
| No | 42 (6.7) | 19 (12.2) | 23 (4.9) | |
| Lymphadenectomy | 353 (56.5) | 37 (23.9) | 316 (67.2) | |
| Sentinel node biopsy | 220 (35.2) | 95 (61.3) | 125 (26.6) | |
| Unknown | 10 (1.6) | 4 (2.6) | 6 (1.3) | |
| Neoadjuvant chemotherapy | <0.00001 | |||
| No | 474 (75.9) | 140 (90.3) | 334 (71.0) | |
| Yes | 145 (23.2) | 11 (7.1) | 134 (28.5) | |
| Unknown | 6 (0.9) | 4 (2.6) | 2 (0.5) | |
| Adjuvant chemotherapy | =0.004 | |||
| No | 248 (39.7) | 76 (49.0) | 172 (36.6) | |
| Yes | 365 (58.4) | 74 (47.7) | 291 (61.9) | |
| Unknown | 12 (1.9) | 5 (2.6) | 7 (1.5) | |
| Radiotherapy | <0.0001 | |||
| No | 102 (16.3) | 51 (32.9) | 51 (10.8) | |
| Yes | 512 (81.9) | 100 (64.5) | 412 (87.7) | |
| Unknown | 11 (1.8) | 4 (2.6) | 7 (1.5) | |
| Hormone treatment | ||||
| No | 367 (58.7) | 98 (63.2) | 269 (57.2) | =0.06 |
| Yes | 238 (38.1) | 47 (30.3) | 191 (40.6) | |
| Unknown | 20 (3.2) | 10 (6.5) | 10 (2.2) |
***p < 0.0001, ****p < 0.00001.
NSS group: non specific screening group, ISP group: Intensive screening group.
Abbreviations: IBCG: incident breast cancer group.
PBCG: prevalent breast cancer group.