Simon L, et al. - In preterm infants, researchers measured the association between neonatal length growth and 2-year neurological outcome. They calculated the neonatal observed length growth (OLG) as the change in length Z-score between birth and discharge, and expected length growth (ELG) was estimated based on gestational age, birth weight Z-score, birth length Z-score, gender, and observed neonatal weight growth. The difference between OLG and ELG (Δ_OLG-ELG) was calculated as OLG – ELG, and infants were ranked into 3 classes depending on their Δ_OLG-ELG (≤–0.5, –0.49 to 0.49, ≥0.50 Z-score). Findings suggest an association of Δ_OLG-ELG ≤–0.5 Z-score with a higher risk for the 2-year nonoptimal neurodevelopmental outcome.