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Multivariate logistic regression analysis for factors associated with involvement of three or more axillary lymph nodes.
| Variable | Odds ratio | 95% CI | p-value |
|---|---|---|---|
| Age | 0.99 | 0.97–1.02 | 0.636 |
| Tumor size by pre-op US (cm) | 1.58 | 1.23–2.01 | < 0.001 |
| Axillary US grade | 2.03 | 1.61–2.56 | < 0.001 |
| PET/CT-ALN positive (SUV) | 2.64 | 1.47–4.75 | 0.001 |
ALN, Axillary lymph node; CI, Confidence interval; US, Ultrasonography; PET/CT, Positron emission tomography/computed tomography.
