Journal
ARCHIVES OF DISEASE IN CHILDHOOD-FETAL AND NEONATAL EDITION
Volume 100, Issue 4, Pages F301-F308Publisher
BMJ PUBLISHING GROUP
DOI: 10.1136/archdischild-2014-307684
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Funding
- Medical Research Council [G0501681, G0700452] Funding Source: Medline
- Department of Health [RP-PG-0407-10029] Funding Source: Medline
- MRC [G0700452, G0501681] Funding Source: UKRI
- Medical Research Council [G0700452, G0501681] Funding Source: researchfish
- National Institute for Health Research [RP-PG-0407-10029] Funding Source: researchfish
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Objective There is a paucity of data relating to neurodevelopmental outcomes in infants born late and moderately preterm (LMPT; 32(+0)-36(+6) weeks). This paper present the results of a prospective, population-based study of 2-year outcomes following LMPT birth. Design 1130 LMPT and 1255 term-born children were recruited at birth. At 2 years corrected age, parents completed a questionnaire to assess neurosensory (vision, hearing, motor) impairments and the Parent Report of Children's Abilities-Revised to identify cognitive impairment. Relative risks for adverse outcomes were adjusted for sex, socio-economic status and small for gestational age, and weighted to account for over-sampling of term-born multiples. Risk factors for cognitive impairment were explored using multivariable analyses. Results Parents of 638 (57%) LMPT infants and 765 (62%) controls completed questionnaires. Among LMPT infants, 1.6% had neurosensory impairment compared with 0.3% of controls (RR 4.89, 95% CI 1.07 to 22.25). Cognitive impairments were the most common adverse outcome: LMPT 6.3%; controls 2.4% (RR 2.09, 95% CI 1.19 to 3.64). LMPT infants were at twice the risk for neurodevelopmental disability (RR 2.19, 95% CI 1.27 to 3.75). Independent risk factors for cognitive impairment in LMPT infants were male sex, socioeconomic disadvantage, non-white ethnicity, preeclampsia and not receiving breast milk at discharge. Conclusions Compared with term-born peers, LMPT infants are at double the risk for neurodevelopmental disability at 2 years of age, with the majority of impairments observed in the cognitive domain. Male sex, socio-economic disadvantage and preeclampsia are independent predictors of low cognitive scores following LMPT birth.
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