Table 4 Comparison of the IHC4+C score with the NPI in assessing risk of breast cancer distant recurrence
| Â | IHC4-C | ||
|---|---|---|---|
|  | Low, 0–10.0% | Intermediate, >10.0–20.0% | High, >20.0% |
NPI | |||
 Low (<3.4) | 35 | 3 | 0 |
 Intermediate (3.4–5.4) | 24 | 22 | 13 |
 High (>5.4) | 0 | 0 | 4 |