Table 1 Comparison of baseline characteristics between the two groups in total populations
Positive margins | Negative margins | P | |
|---|---|---|---|
N | 119 | 454 | |
Age (years) | 0.421 | ||
≤ 50 | 53 (44.5%) | 221 (48.7%) | |
> 50 | 66 (55.5%) | 233 (51.3%) | |
BMI | 24.9 ± 3.3 | 25.0 ± 3.5 | 0.770 |
Menopausal status | 0.955 | ||
Postmenopausal | 56 (47.1%) | 210 (46.8%) | |
Non-postmenopausal | 63 (52.9%) | 239 (53.2%) | |
Tumor location | 0.871 | ||
Upper outer quadrant | 49 (41.2%) | 182 (40.4%) | |
The other quadrants | 70 (58.8%) | 269 (59.6%) | |
Palpability | 0.156 | ||
Yes | 104 (87.4%) | 416 (91.6%) | |
No | 15 (12.6%) | 38 (8.4%) | |
Multiple lesions | 0.646 | ||
Yes | 9 (7.6%) | 29 (6.4%) | |
No | 110 (92.4%) | 425 (93.6%) | |
Tumor size (cm) | 2.0 ± 0.9 | 2.0 ± 0.8 | 0.440 |
Microcalcifications | 0.001 | ||
Yes | 51 (42.9%) | 121 (26.7%) | |
No | 68 (57.1%) | 333 (73.3%) | |
Ultrasonic features | |||
Increased blood flow | 0.000 | ||
Yes | 41 (34.5%) | 74 (16.3%) | |
No | 78 (65.5%) | 380 (83.7%) | |
Crab sign | 0.557 | ||
Yes | 36 (30.3%) | 125 (27.5%) | |
No | 83 (69.7%) | 329 (72.5%) | |
Spiculated margin | 0.826 | ||
Yes | 43 (36.1%) | 169 (37.2%) | |
No | 76 (63.9%) | 285 (62.8%) | |