Table 3.
Patterns of failure in the unadjusted cohort.
| No IMNI | IMNI | P value | |
|---|---|---|---|
| Patterns of failure in the unadjusted cohort | |||
| Local | 2 (0.8%) | 2 (1.9%) | 0.385 |
| Regional | 14 (5.8%) | 2 (1.9%) | 0.115 |
| Axilla | 4 | 0 | |
| SCN | 2 | 2 | |
| IMN | 4 | 0 | |
| Axilla & SCN | 3 | 0 | |
| SCN & IMN | 1 | 0 | |
| DM | 51 (21.0%) | 10 (9.5%) | 0.010 |
| LRR only | 2 (0.8%) | 1 (1.0%) | 0.082 |
| DM only | 39 (16.0%) | 8 (7.6%) | |
| LRR + DM | 12 (4.9%) | 2 (1.9%) | |
| Death | 31 (12.8%) | 3 (2.9%) | 0.004 |
| Death without disease | 2 | 0 | |
| Patterns of failure in the inverse probability treatment weighting-adjusted cohort | |||
| Local | 2.0 (0.8%) | 3.4 (2.3%) | 0.254 |
| Regional | 14.7 (5.6%) | 2.1 (1.4%) | 0.035 |
| DM | 49.6 (18.8%) | 16.2 (11.1%) | 0.034 |
IMNI, internal mammary node irradiation; SCN, supraclavicular node; IMN, internal mamary node; LRR, locoregional recurrence; DM, distant metastasis.