Table 2. SLNB by different methods.
| Study sample | MB only | RI only | MB + RI | MB + ICG | Statistical association | |
|---|---|---|---|---|---|---|
| IR | 1,460/1,521 (96%) | 563/598 (94%) | 43/46 (93.5%) | 307/320 (96%) | 547/557 (98%) | χ2 = 13.3, p = 0.004 |
| Number of SLN removed, mean (SD) | 3 (1.7) | 2.7 (1.5) | 2.3 (1.4) | 2.8 (1.7) | 3.4 (1.8) | f = 21.6, p = <0.001 |
| SLNB positivity rate | 437/1,460 (30%) | 186/563 (33%) | 16/43 (37%) | 99/307 (32%) | 136/547 (25%) | χ2 = 11.16, p = 0.01 |
MB: Methylene blue, RI: Radioisotope, ICG: Indo cyanine green, IR: Identification rate