• Pediatrics · Aug 2009

    Neurodevelopmental disability through 11 years of age in children born before 26 weeks of gestation.

    • Samantha Johnson, Joe Fawke, Enid Hennessy, Vicky Rowell, Sue Thomas, Dieter Wolke, and Neil Marlow.
    • Neonatology, Institute for Women's Health, University College London, London, United Kingdom. sam.johnson@nottingham.ac.uk
    • Pediatrics. 2009 Aug 1; 124 (2): e249-57.

    BackgroundTo assess functional disability in children born before 26 weeks of gestation at 11 years of age and the stability of findings in individuals between 6 and 11 years of age.MethodsOf 307 surviving children born in 1995, 219 (71%) were assessed at 11 years of age alongside 153 classmates. Children were evaluated by using standardized tests of cognitive ability and clinical condition at both ages.ResultsUsing classmate data to determine reference ranges, serious cognitive impairment (score of less than -2 SD) was present in 40% of extremely preterm children and 1.3% of classmates (odds ratio [OR]: 50 [95% confidence interval (CI): 12-206]) at 11 years of age. Overall, 38 (17%) extremely preterm children had cerebral palsy; moderate or severe impairment of neuromotor function, vision, and hearing was present in 10%, 9%, and 2% of these children, respectively. Combining impairment across domains, 98 (45%) extremely preterm children had serious functional disability compared with 1% of the classmates (OR: 61 [95% CI: 15-253]); this was more common in boys than girls (OR: 1.8 [95% CI: 1.0-3.1]) and in those born at 23 or 24 weeks' gestation compared with those born at 25 weeks' gestation (OR: 1.8 [95% CI: 1.0-3.1]). The prevalence of serious functional disability was 46% at 6 years of age and 45% at 11 years of age. Using multiple imputation to correct for selective dropout, it is estimated that 50% (95% CI: 44%-57%) of extremely preterm children are free of serious disability at 11 years of age.ConclusionsExtremely preterm children remain at high risk for neurodevelopmental disability at 11 years of age compared with term peers. The prevalence of disability remained stable between 6 and 11 years of age, and large individual shifts in classification of disability were unusual.

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