Abstract
Objective: Extremely preterm (EP) impairment rates are likely underestimated using the Bayley III norm-based thresholds scores and may be better assessed relative to concurrent healthy term reference (TR) infants born in the same hospital. Study design: Blinded, certified examiners in the Neonatal Research Network (NRN) evaluated EP survivors and a sample of healthy TR infants recruited near the 2-year assessment age. Results: We assessed 1452 EP infants and 183 TR infants. TR-based thresholds showed higher overall EP impairment than Bayley norm-based thresholds (O.R. = 1.86; [95% CI 1.56–2.23], especially for severe impairment (36% vs. 24%; p ≤ 0.001). Difficulty recruiting TR patients at 2 years extended the study by 14 months and affected their demographics. Conclusion: Impairment rates among EP infants appear to be substantially underestimated from Bayley III norms. These rates may be best assessed by comparison with healthy term infants followed with minimal attrition from birth in the same centers. ClinicalTrials.gov ID: Term Reference (under the Generic Database Study): NCT00063063.
Original language | English |
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Pages (from-to) | 1398-1405 |
Number of pages | 8 |
Journal | Journal of Perinatology |
Volume | 43 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2023 |
Bibliographical note
Publisher Copyright:© 2023, This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply.
Funding
The National Institutes of Health and the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) (U10 HD21373, UG1 HD21364, UG1 HD21385, UG1 HD27851, UG1 HD27853, UG1 HD27856, UG1 HD27880,UG1 HD27904, UG1 HD34216, UG1 HD36790, UG1 HD40492, UG1 HD40689, UG1 HD53089, UG1 HD53109, UG1 HD68244, UG1 HD68270, UG1 HD68278, UG1 HD68263, UG1 HD68284; UG1 HD87226, UG1 HD87229) and the National Center for Advancing Translational Sciences (NCATS) (UL1 TR6, UL1 TR41, UL1 TR42, UL1 TR77, UL1 TR93, UL1 TR105, UL1 TR442, UL1 TR454, UL1 TR1117, provided grant support for the Neonatal Research Network, including for the Follow-up Study. The National Institutes of Health and the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) provided grant support for the Neonatal Research Network for the Term Reference Study. NICHD staff provided input into the study design, conduct, analysis, and manuscript drafting; NCATS cooperative agreements provided infrastructure support to the NRN. While NICHD staff had input into the study design, conduct, analysis, and manuscript drafting, the comments and views of the authors do not necessarily represent the views of NICHD, the National Institutes of Health, the Department of Health and Human Services, or the U.S. Government.
Funders | Funder number |
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Neonatal Research Network | |
National Institutes of Health (NIH) | |
U.S. Department of Health and Human Services | |
National Center for Advancing Translational Sciences (NCATS) | UL1 TR105, UL1 TR442, UL1 TR454, UL1 TR1117 |
National Center for Advancing Translational Sciences (NCATS) | |
Eunice Kennedy Shriver National Institute of Child Health and Human Development | UG1 HD27851, UG1 HD34216, UG1 HD27853, UG1 HD68270, UG1 HD27856, UG1 HD53109, UG1 HD68284, UG1 HD27904, UG1 HD53089, UG1 HD36790, U10 HD21373, UG1 HD40689, UG1 HD87229, UG1 HD68263, UG1 HD21385, UG1 HD68244, UG1 HD21364, UG1 HD68278, UG1 HD40492, UG1 HD27880, UG1 HD87226 |
Eunice Kennedy Shriver National Institute of Child Health and Human Development |
ASJC Scopus subject areas
- Pediatrics, Perinatology, and Child Health
- Obstetrics and Gynecology