Research Article
Are Basal-Like and Non-Basal-Like Triple-Negative Breast Cancers Really Different?
Table 3
Comparison between basal-like and non-basal-like subtypes.
| | Characteristic (N) | Basal-like N (%) | Non-basal-like N (%) | Chi-square | value |
| | Menstrual history (200) | | | | | | Premenopausal | 44 (43.6) | 37 (37.4) | 0.922 | 0.631 | | Perimenopausal | 7 (6.9) | 9 (9.1) | | Postmenopausal | 50 (49.5) | 53 (53.5) | | Age at first childbirth (years) (99) | | | | | | 15–20 | 5 (11.1) | 9 (16.7) | 6.189 | 0.185 | | 21–25 | 27 (60) | 24 (44.4) | | 26–30 | 10 (22.2) | 12 (22.2) | | 31–35 | 1 (2.2) | 0 (0) | | Not yet | 2 (4.4) | 9 (16.7) | | Parity (150) | | | | | | 1 | 12 (16.2) | 7 (9.2) | 8.285 | 0.141 | | 2 | 25 (33.8) | 32 (42.1) | | 3 | 21 (28.4) | 22 (28.9) | | 4 or more | 14 (18.9) | 8 (10.5) | | Not yet | 2 (2.7) | 7 (9.2) | | Family history of cancer (149) | | | | | | Yes | 18 (24) | 16 (21.6) | 0.120 | 0.729 | | No | 57 (76) | 58 (78.4) | | Stage (200) | | | | | | I | 3 (3) | 8 (8.1) | 3.906 | 0.272 | | II | 69 (68.3) | 67 (67.7) | | III | 22 (21.8) | 21 (21.2) | | IV | 7 (6.9) | 3 (3) | | Grade (200) | | | | | | II | 11 (10.9) | 16 (16.2) | 0.306 | 0.189 | | III | 90 (89.1) | 83 (83.8) | | Lymph node status (189) | | | | | | Positive | 43 (46.7) | 43 (44.3) | 0.111 | 0.740 | | Negative | 49 (53.3) | 54 (55.7) | | Extracapsular extension (86) | | | | | | Present | 26 (60.5) | 32 (74.4) | 1.906 | 0.167 | | Absent | 17 (39.5) | 11 (25.6) | | Lymphovascular invasion (194) | | | | | | Present | 35 (34.7) | 46 (46.5) | 7.908 | 0.019 | | Absent | 60 (59.4) | 53 (53.5) | | Recurrence type (32) | | | | | | Local | 1 (6.3) | 1 (6.3) | 1.034 | 0.596 | | Locoregional | 0 (0) | 1 (6.3) | | Distant | 15 (93.8) | 14 (87.5) | | Vital status (200) | | | | | | Alive | 78 (77.2) | 83 (83.8) | 1.392 | 0.238 | | Death | 23 (22.8) | 16 (16.2) | | | Cause of death (39) | | | | | | Disease-related | 21 (91.3) | 12 (75) | 1.927 | | | Non-disease-related | 2 (8.7) | 4 (25) | 0.165 |
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