Table 1 Baseline characteristics and surgical procedures
| Â | Control (n = 15) | Low Dose (n = 15) | High Dose (n = 15) | Total (n = 45) |
|---|---|---|---|---|
Age (years) (mean, SD) | 55.5 (15.3) | 57.5 (13.2) | 53.8 (9.9) | 55.6 (12.8) |
Surgery Type (N, %) | ||||
 Lumpectomy | 10 (66.7) | 9 (60.0) | 10 (66.7) | 29 (64.4) |
 Mastectomy | 5 (33.3) | 6 (37.5) | 5 (33.3) | 16 (35.5) |
Diagnosis (N, %) | ||||
 IDC | 13 (86.7) | 13 (86.7) | 11 (73.3) | 37 (82.2) |
 ILC | 1 (6.7) | 2 (13.3) | 4 (26.7) | 7 (15.6) |
 IMC | 1 (6.7) | 0 (0.0) | 0 (0.0) | 1 (6.7) |
Primary Tumour Size (cm) (mean, SD) | 3.1 (1.2) | 2.7 (0.9) | 3.3 (2.2) | 3.0 (1.5) |
Grade (N, %) | ||||
 1 | 1 (6.7) | 1 (6.7) | 1 (6.7) | 3 (6.7) |
 2 | 4 (26.6) | 6 (40.0) | 5 (33.3) | 15 (33.3) |
 3 | 10 (66.7) | 8 (53.3) | 9 (60.0) | 27 (60.0) |
Mitotic Score (N, %) | ||||
 1 | 4 (26.7) | 5 (33.3) | 5 (33.3) | 14 (31.1) |
 2 | 3 (20.0) | 3 (20.0) | 4 (26.7) | 10 (22.2) |
 3 | 8 (53.3) | 7 (46.7) | 6 (37.5) | 21 (46.7) |
ER Status (N, %) | ||||
 Positive | 12 (80.0) | 12 (80.0) | 11 (73.3) | 35 (77.8) |
 Negative | 3 (20.0) | 3 (20.0) | 4 (26.7) | 10 (22.2) |
PR Status (N, %) | ||||
 Positive | 12 (80.0) | 10 (66.7) | 10 (66.7) | 32 (71.1) |
 Negative | 3 (20.0) | 5 (33.3) | 5 (33.3) | 13 (28.9) |
Her2 Status (N, %) | ||||
 Positive | 1 (6.7) | 4 (26.7) | 2 (13.3) | 7 (15.6) |
 Negative | 14 (93.3) | 11 (73.3) | 13 (86.7) | 38 (84.4) |
DCIS Present (N, %) | ||||
 Yes | 12 (80.0) | 10 (66.7) | 9 (60.0) | 31 (68.9) |
 No | 3 (20.0) | 5 (33.3) | 6 (37.5) | 14 (31.1) |
Margin Status (N, %) | ||||
 Positive (Invasive) | 1 (6.7) | 1 (6.7) | 4 (26.7) | 6 (13.3) |
 Negative (Invasive) | 14 (93.3) | 14 (93.3) | 11 (73.3) | 39 (86.7) |
 Positive (DCIS) | 1 (6.7) | 0 (0.0) | 1 (6.7) | 2 (4.4) |
 Negative (DCIS) | 14 (93.3) | 15 (100) | 14 (93.3) | 43 (95.6) |
Revised Margins at Index Surgery (N, %)a | ||||
 Yes | 3 (20.0) | 3 (20.0) | 4 (26.7) | 10 (22.2) |
 No | 12 (80.0) | 12 (80.0) | 11 (73.3) | 35 (77.8) |
Re-excision (N, %) | ||||
 Yes | 2 (13.3) | 1 (6.7) | 3 (20.0) | 6 (13.3) |
 No | 13 (86.7) | 14 (93.3) | 12 (80.0) | 39 (86.7) |