alexa Pune low birth weight study - birth to adulthood - cognitive development.
Pediatrics

Pediatrics

Journal of Neonatal Biology

Author(s): Chaudhari S, Otiv M, Khairnar B, Pandit A, Hoge M,

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Abstract OBJECTIVE: To assess the cognitive development of non-handicapped low birth weight (LBW) infants at 18 years. DESIGN: Prospective cohort study. SETTING: Infants born between 1987 - 1989 with birth weight less than 2000 g and discharged from a neonatal special care unit were followed up till the age of 18 years. METHODS: The intelligence quotient (IQ) was determined by Ravens progressive matrices. Assessment of adjustment and aptitude was done. RESULTS: The cohort of 161 LBW infants was divided into three groups according to their gestation - preterm SGA (n=61), full term SGA (n=30) and preterm AGA (n=70). 71 full term AGA infants served as controls. The IQ of the study group (Percentile 39.3) was significantly lower than that of controls (Percentile 54.9) (P=0.002). Preterm SGA subjects had the lowest IQ (Percentile 35.5), though just within normal limits. Males from the study group had significantly lower IQ than male controls (P=0.03). The IQ of PTSGA subjects of college educated mothers (P=0.004) and belonging to higher socio-economic class (P=0.04) was significantly higher. On the differential aptitude test, PTSGA subjects were poor in speed and mechanical reasoning. The 18 year IQ could be best predicted by IQ at 6 and 12 years. CONCLUSION: Preterm SGA children have the lowest IQ at 18 years, males have lower IQ. Maternal education and socio-economic status have great impact on cognitive development. Good prediction of the 18 year IQ can be done by the 6 and 12 year IQ.
This article was published in Indian Pediatr and referenced in Journal of Neonatal Biology

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