Positive predictive value and relative sensitivity in families ascertained on the existence of multiple tumours in the proband child
| Criteria on relatives | Predictive value | Relative sensitivity |
| None | 21% (6/28) | 40% (6/15) |
| Very loose | 42% (5/12) | 33% (5/15) |
| Loose | 63% (5/8) | 33% (5/15) |
| Stringent | 71% (5/7) | 33% (5/15) |
| Very stringent | 100% (3/3) | 20% (3/15) |