Table 1.
Patient and tumor characteristics
| PGS | USS | p Valuea | |
|---|---|---|---|
| Age [mean (95 % CI)] | 57.0 (54.6–59.4) | 54.4 (51.9–56.8) | 0.124 |
| BMI [mean (95 % CI)] | 26.6 (25.4–27.8) | 26.2 (25.0–27.4) | 0.685 |
| Location of carcinoma [n (%)] | |||
| Upper outer | 48 (70) | 31 (48) | 0.079 |
| Upper inner | 7 (10) | 12 (19) | |
| Lower outer | 9 (13) | 16 (25) | |
| Lower inner | 5 (7) | 5 (8) | |
| Weight specimen [mean (95 % CI)] | 51.9 (43.9–59.9) | 37.8 (31.4–44.1) | 0.007 |
| Volume specimen [mean (95 % CI)] | 53.1 (45.0–61.2) | 37.9 (31.2–44.5) | 0.004 |
| Diameter tumor [mean (95 % CI)] | 2.0 (1.8–2.2) | 2.0 (1.8–2.2) | 0.983 |
| T-stadium [n (%)] | |||
| T1 | 35 (51) | 36 (56) | 0.523 |
| T2 | 34 (49) | 28 (44) | |
| CRR [mean (95 % CI)] | 1.7 (1.4–2.0) | 1.0 (0.9–1.2) | <0.001 |
| Additional therapy [n (%)] | |||
| None | 50 (73) | 57 (89) | 0.038 |
| Re-excision | 3 (4) | 1 (2) | (0.016 for comparison additional therapy yes/no) |
| Mastectomy | 5 (7) | 0 (0) | |
| Boost | 11 (16) | 6 (9) | |
PGS palpation-guided surgery, USS ultrasound-guided surgery, CI confidence interval, BMI body mass index
aChi squared test, Fisher’s exact test, or two independent sample t-tests