Table 3. Extracted rules for each category of survival status .
| Leaf node | Rule number | Rules content | Sensitivity (%) |
| Survival status (Yes) | |||
| 12 | 1 | If Stage ≤3C & Positive-regional-node ≤9 & Tumor size ≤7 & Her2 = No | 89.7 |
| 15 | 2 | If Stage ≤3C & Positive-regional-node ≤9 & Tumor size ≤7 & Her2 = Yes & Age ≤54 | 86.6 |
| 13 | 3 | If Stage >3C & PR = Yes & Tumor size ≤5 & Positive-regional-node ≤6 | 76.9 |
| 8 | 4 | If Stage ≤3C & Positive-regional-node ≤9 & Tumor size >7 | 60.0 |
| 16 | 5 | If Stage ≤3C & Positive-regional-node ≤9 & Tumor size ≤7 & Her2 = Yes & Age >54 | 58.5 |
| 4 | 6 | If Stage ≤3C & Positive-regional-node >9 | 51.5 |
| Survival status (No) | |||
| 5 | 1 | If Stage >3C & PR = No | 84.1 |
| 10 | 2 | If Stage >3C & PR = Yes & Tumor size >5 | 79.2 |
| 14 | 3 | If Stage >3C & PR = Yes & Tumor size ≤5 & Positive-regional-node >6 | 58.8 |