Table 2.
Classification rules predicting neuroblastoma patients' outcome on the bases of INRG risk factors
| Rule IDa | INSS stage | MYCN status | Age at diagnosis (Years) | Predicted Outcome | Covering b (%) | Error c (%) | Risk group d | ||
| 2.1 | IF ( | {1, 3, 4, 4s} | amplified | ≥1 | )THEN | Poor | 50 | 1.5 | HR |
| 2.2 | IF ( | {4} | _ | ≥1 | )THEN | Poor | 90 | 13 | HR |
| 2.3 | IF ( | {1, 2, 4s} | _ | <1 | )THEN | Good | 68 | 1.9 | LR |
| 2.4 | IF ( | {1,2,3,4s} | normal | _ | )THEN | Good | 81 | 3.9 | LR |
| 2.5 | IF ( | _ | _ | <1 | )THEN | Good | 65 | 0 | LR,IR |
a The Rule ID is composed by the table number followed by a dot and the rule number.
b Covering is the fraction of examples in the training set that verify the rule and belong to the target class.
C Error is the fraction of examples in the training set that satisfy the rule and do not belong to the target class.
d The risk assessment is based on INRG classification taking into consideration only INSS stage, MYCN status and Age at diagnosis. HR = High Risk; IR = Intermediate Risk; LR = Low Risk.