The INTERGROWTH-21st Project international INTER-NDA standards for child development at 2 years of age
| INTER-NDA domain | Pooled centiles (n=1181) | ||||||
| c3 | c10 | c25 | c50 | c75 | c90 | c97 | |
| Cognitive* | 27.4 | 38.5 | 62.2 | 79.5 | 88.8 | 92.6 | 99.6 |
| Fine motor* | 17.5 | 25.7 | 74.2 | 91.4 | 100.0 | 100.0 | 100.0 |
| Gross motor* | 31.1 | 51.7 | 66.7 | 81.6 | 100.0 | 100.0 | 100.0 |
| Language* | 12.1 | 17.8 | 45.7 | 71.7 | 88.5 | 95.1 | 100.0 |
| Positive behaviour* | 37.8 | 51.4 | 70.0 | 90.0 | 100.0 | 100.0 | 100.0 |
| Negative behaviour†| 0.0 | 0.0 | 0.0 | 25.0 | 25.0 | 50.0 | 76.5 |
*For these domains, higher scores reflect better outcomes.
†For negative behaviour, lower scores reflect better outcomes.
INTER-NDA, INTERGROWTH-21st Neurodevelopment Assessment.