Methods: 133 Newborn infants admitted longer than 3 days to private-sector neonatal intensive care units were enrolled. 113 of these parents were contacted when their infants were 6-months corrected-age. They completed the ASQ (n=60) and the PEDS COMBINED (n=65) questionnaires at home. Returned questionnaires were compared using an in-subject design. Concordance between the questionnaires was determined with the kappa coefficient (κ) and Test of Symmetry.

Results: Concordance between the ASQ and PEDS COMBINED was 90.7% (κ = 0.82, ρ = 0.05).

The ASQ and PEDS COMBINED identified 40% and 42% of the cohort with developmental concerns. The ASQ and PEDS COMBINED showed excellent interrater agreement, identifying the same infants requiring further developmental assessment. When there was discordance, it was non-significant in the direction of the ASQ being more likely to identify an infant as delayed overall and statistically significant in the direction of the PEDS COMBINED being more likely to identify communication delays (ρ = 0.01)

Conclusions: The ASQ and PEDS COMBINED identify the same infants with developmental concerns. The PEDS COMBINED is more sensitive to communication delays.