Table 5.
Levels of diagnostic certainty for NDD.
| Personnel | Assessment |
|---|---|
| Level 1 | |
| Gold standard | Gold standard |
| Level 2 | |
| Gold standard | Below gold standard |
| Below gold standard | Gold standard |
| Level 3A | |
| Below gold standard | Below gold standard |
| Gold standard | Well below gold standard |
| Well below gold standard | Gold standard |
| Well below gold standard | Below gold standard |
| Below gold standard | Well below gold standard |
| Level 3B | |
| Well below gold standard | Well below gold standard |
| Level 4 | |
| Reported NDD with insufficient evidence to meet the case definition | |
| Level 5 | |
| Not a case of NDD | |