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Concordance between CNB and surgical specimen for HER2 status.
| Surgical specimen | ||||||
| CNB | Score1+ | Score2+ | Score3+ | concordance rate, % | Kappa | P value |
| Score0/1+ | 37 | 5 | 1 | 83 | 0.737 | P < .001 |
| Score2+ | 2 | 24 | 3 | |||
| Score3+ | 0 | 5 | 17 | |||
CNB = core needle biopsy, HER2 = human epidermal growth factor receptor-2.
