Table 2.
Type of axillary surgery by clip placement and by cN category
| Type of axillary surgery | ||||
|---|---|---|---|---|
| Variable | N | All other axillary surgery, N = 371a | SLN surgery only, N = 276a | p valueb |
| Patients with cN1 | ||||
| Nodal clip placement | 647 | < 0.001 | ||
| No clip placed | 336/507 (66%) | 171/507 (34%) | ||
| Clip placed | 35/140 (25%) | 105/140 (75%) | ||
| Patients with cN2 | ||||
| Nodal clip placement | 66 | 0.023 | ||
| No clip placed | 46/58 (79%) | 12/58 (21%) | ||
| Clip placed | 3/8 (38%) | 5/8 (63%) | ||
| Patients with cN3 | ||||
| Nodal clip placement | 88 | < 0.001 | ||
| No clip placed | 58/75 (77%) | 17/75 (23%) | ||
| Clip placed | 2/13 (15%) | 11/13 (85%) | ||
an/N (%)
bPearson’s chi-squared test