| | Characteristic | No. of alive or OCD (%) | No. of BCD (%) | Crude HR (95%CI) | aHR (95%CI) |
| | Mammographic appearance | | | | | | Stellate/Powdery/Crushed stone-like | 227 (85.02) | 40 (14.98) | 1.00 | 1.00 | | Circular | 137 (85.09) | 24 (14.91) | 1.09 (0.66, 1.80) | 0.82 (0.48, 1.39) | | Casting | 22 (68.75) | 10 (31.25) | 2.33 (1.17, 4.66) | 3.13 (1.46, 6.70) | | Architectural distortion | 11 (47.83) | 12 (52.17) | 4.73 (2.48, 9.05) | 3.19 (1.55, 6.56) | | Basal phenotype | | | | | | Non-basal | 348 (86.78) | 53 (13.22) | 1.00 | 1.00 | | Basal | 29 (65.91) | 15 (34.09) | 3.39 (1.91, 6.01) | 2.68 (1.33, 5.39) | | Histologic tumor distribution | | | | | | Unifocal | 269 (89.97) | 30 (10.03) | 1.00 | 1.00 | | Multifocal | 87 (75.65) | 28 (24.35) | 2.68 (1.60, 4.49) | 1.62 (0.95, 2.76) | | Diffuse | 30 (68.18) | 14 (31.82) | 3.80 (2.01, 7.17) | – | | Tumor size (mm) | | | | | | <15 | 165 (93.22) | 12 (6.78) | 1.00 | 1.00 | | ≥15 | 222 (78.72) | 60 (21.28) | 3.77 (2.03, 7.02) | 1.01† (1.00, 1.02) | | Histologic malignancy grade | | | | | | I/II | 298 (87.39) | 43 (12.61) | 1.00 | 1.00 | | III | 89 (74.79) | 30 (25.21) | 2.28 (1.43, 3.63) | 1.10 (0.65, 1.86) | | Lymph node involvement | | | | | | Negative | 298 (90.03) | 33 (9.97) | 1.00 | 1.00 | | Positive | 86 (68.25) | 40 (31.75) | 3.90 (2.46, 6.19) | 3.04 (1.76, 5.27) | | Surgery type | | | | | | Breast conserving surgery | 251 (87.15) | 37 (12.85) | 1.00 | 1.00 | | Mastectomy | 155 (73.81) | 55 (26.19) | 2.39 (1.58, 3.63) | 1.10 (0.63, 1.91) | | Radiotherapy | | | | | | No | 153 (78.46) | 42 (21.54) | 1.00 | 1.00 | | Yes | 250 (83.61) | 49 (16.39) | 0.59 (0.39, 0.89) | 0.59 (0.36, 0.97) | | Chemotherapy | | | | | | No | 342 (83.82) | 66 (16.18) | 1.00 | 1.00 | | Yes | 61 (70.93) | 25 (29.07) | 1.74 (1.10, 2.75) | 0.64 (0.36, 1.13) | | Hormone therapy | | | | | | No | 311 (83.16) | 63 (16.84) | 1.00 | 1.00 | | Yes | 92 (76.67) | 28 (23.33) | 1.52 (0.97, 2.37) | 1.15 (0.71, 1.87) |
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