Archives of pediatrics & adolescent medicine
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Arch Pediatr Adolesc Med · Feb 2012
ReviewRelationship between attrition and neurodevelopmental impairment rates in extremely preterm infants at 18 to 24 months: a systematic review.
To assess the effect of loss to follow-up rates at 18 to 24 months on neurodevelopmental outcome statistics for infants of less than 1000 g birth weight or less than 28 weeks' gestational age. ⋯ Ascertainment bias may overestimate NDI in extremely low-birth-weight or extremely low-gestational-age survivors at 18 to 24 months. Alternatively, the characteristics of different populations and health systems may contribute to higher rates of attrition and higher rates of NDI.