Table 3. Concordance between CNB and SE for ER, PgR, HER2, and Ki-67 results.
| CNB | SE | BA | CR | Kappa | P value | |
|---|---|---|---|---|---|---|
| Neg | Pos | |||||
| ER | 0.94 | 0.97 | 0.9 | <0.001 | ||
| Neg | 262 | 17 | ||||
| Pos | 28 | 1,108 | ||||
| PgR | 0.91 | 0.94 | 0.84 | <0.001 | ||
| Neg | 278 | 31 | ||||
| Pos | 49 | 1,057 | ||||
| HER2 | 0.98 | 0.99 | 0.95 | <0.001 | ||
| Neg | 1101 | 12 | ||||
| Pos | 10 | 292 | ||||
| Ki-67 | 0.84 | 0.85 | 0.63 | <0.001 | ||
| ≤14% | 287 | 147 | ||||
| >14% | 63 | 918 | ||||
CNB, core needle biopsy; SE, surgical excision; ER, estrogen receptor; PgR, progesterone receptor; HER2, human epidermal growth factor receptor-2; Neg, negative; Pos, positive; BA, balance accuracy; CR, confidence rate.