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The simplified risk score is formed by taking the sum of the points assigned to each risk factor that is present. The score ranges from 0 to 21
| Risk factor | Number of points |
|---|---|
| ER ≤ 80 | 5 points |
| PR ≤ 80 | 5 points |
| Tumor size > 20 mm | 3 points |
| Nuclear grade 2 | 2 points |
| Nuclear grade 3 | 7 points |
| Histologic grade 3 | 1 point |
Abbreviations: ER, estrogen receptor; PR, progesterone receptor
