Table 2.
Surgical procedures in both groups
| Invasive carcinoma, n (%) | In situ carcinoma, n (%) | Total, n (%) | |
|---|---|---|---|
| First procedure | |||
| Breast conserving | 348a (70) | 241b (72) | 589 (70) |
| Mastectomy | 152 (30) | 90 (27) | 242 (29) |
| Second procedure | |||
| Breast conserving | 22 (36) | 45 (47) | 67 (42) |
| Mastectomy | 39 (64) | 52 (54) | 91 (58) |
| Third procedure | |||
| Breast conserving | 0 | 2 (11) | 2 (10) |
| Mastectomy | 2 | 16 (89) | 18 (90) |
| Fourth procedure | |||
| Breast conserving | 0 | 0 | 0 |
| Mastectomy | 0 | 1 | 1 (100) |
| Total number of: | |||
| Breast conserving | 370 (73) | 288 (85) | 658 (65) |
| Mastectomy | 193 (38) | 159 (47) | 352 (35) |
| Total number of conversions from breast conserving to mastectomy | 40c (11) | 66d (28) | 106 (18) |
aFour missing
bSix missing
cOne missing
dThree missing