Table 3. Interclass correlation coefficients between the INTER-NDA and BSID-III subscales.

Subscale	Interclass correlation coefficient (95% CI)
Cognitive	0.85 (0.77–0.90)**
Receptive language/communication	0.74 (0.63–0.83)**
Expressive language/communication	0.88 (0.82–0.92)**
Overall language	0.88 (0.83–0.92)**
Global Behaviour	0.88 (0.82–0.92)**
Positive behaviour	0.84 (0.77–0.90)**
Negative behaviour	0.78 (0.67–0.85)**

**p < .001