Abstract
To compare neurodevelopmental outcomes at 2years corrected age (CA) between infants born very preterm (VP) who did or did not receive a postdischarge responsive parenting intervention (Transmural developmental support for very preterm infants and their parents [TOP program]) between discharge home and 12months' CA. The Systemic Hydrocortisone to Prevent Bronchopulmonary Dysplasia (SToP-BPD) study showed no differences between treatment groups in motor and cognitive development using the Dutch Bayley Scales of Infant Development and behavior using the Child Behavior Checklist at 2years' CA. During its study period, the TOP program was gradually scaled up nationwide in the same population, providing an opportunity to evaluate the effect of this program on neurodevelopmental outcome, after adjusting for baseline differences. Among 262 surviving VP infants in the SToP-BPD study, 35% received the TOP program. Infants in the TOP group had a significantly lower incidence of a cognitive score <85 (20.3% vs 35.2%; adjusted absolute risk reduction: -14.1% [95% CI: -27.2 to -1.1]; P=.03), and a significantly higher mean cognitive score (96.7±13.8), compared with the non-TOP group (92.0±17.5; crude mean difference: 4.7 [95% CI: 0.3 to 9.2]; P=.03). No significant differences were found on motor scores. For behavior problems, a small but statistically significant effect for anxious/depressive problems was found in the TOP group (50.5 vs 51.2; P=.02). VP infants supported by the TOP program from discharge until 12months' CA had better cognitivefunction at 2years' CA. This study demonstrates a sustained positive effect of the TOP program in VP infants.
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