Definitions of NDI
| Impairments | Significant NDI (any one or more of the following)* | NDI (any one or more of the following)† |
|---|---|---|
| Motor | CP with GMFCS III, IV or V | CP with GMFCS I or higher |
| Bayley-III motor composite <70 | Bayley-III motor composite <85 | |
| Cognitive | Bayley-III cognitive composite <70 | Bayley-III cognitive composite <85 |
| Language | Bayley-III language composite <70 | Bayley-III language composite <85 |
| Hearing | Hearing aid or cochlear implant | Sensorineural/mixed hearing loss |
| Vision | Bilateral visual impairment | Unilateral or bilateral visual impairment |
*Includes children who could not be tested using the Bayley-III but who had a Bayley-III general adaptive composite score of <70 or who were assessed to have a severe developmental delay.
†Children with a significant NDI or those who could not be tested using the Bayley-III but who had a Bayley-III general adaptive composite score of <85.
Bayley-III, Bayley Scales of Infant and Toddler Development-Third Edition; CP, cerebral palsy; GMFCS, Gross Motor Function Classification System; NDI, neurodevelopmental impairment.