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- Birit F. P. Broekman
- Departments of Psychological Medicine
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- Yiong-Huak Chan
- Yong Loo Lin School of Medicine, National University of Singapore/National University Health System, Singapore
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- Yap-Seng Chong
- Obstetrics and Gynecology
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- Swee-Chye Quek
- Pediatrics
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- Daniel Fung
- Department of Child and Adolescent Psychiatry, Institute of Mental Health, Singapore
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- Yen-Ling Low
- Singapore Institute for Clinical Sciences, Singapore
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- Yoon-Phaik Ooi
- Department of Child and Adolescent Psychiatry, Institute of Mental Health, Singapore
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- Peter D. Gluckman
- Singapore Institute for Clinical Sciences, Singapore
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- Michael J. Meaney
- Departments of Psychiatry and Neurology and Neurosurgery, Douglas Hospital Research Centre, McGill University, Montreal, Quebec, Canada
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- Tien-Yin Wong
- Singapore Eye Research Institute, Singapore
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- Seang-Mei Saw
- Community, Occupational, and Family Medicine
抄録
<jats:p>OBJECTIVE. Birth parameters have been hypothesized to have an influence on IQ. However, studies within the range of normal birth size have been sparse. With this study we examined the associations between birth length, birth weight, head circumference, and gestational age within the normal birth size range in relation to childhood IQ in Asian children.</jats:p> <jats:p>METHODS. A cohort of 1979 of 2913 Asian children aged 7 to 9 years, recruited from 3 schools in Singapore, were followed yearly from 1999 onward. Birth parameters were recorded by health personnel. Childhood IQ was measured with the Raven's Standard Progressive Matrices at ages 8 to 12.</jats:p> <jats:p>RESULTS. The mean IQ score across the sample (n = 1645) was 114.2. After controlling for multiple confounders for every 1-cm increment in birth length, 1 kg in birth weight, or 1 cm in head circumference, there was a corresponding increase in IQ of 0.49 points (P for trend < .001), 2.19 points (P for trend = .007) and .62 points (P for trend = .003), respectively. These associations persisted even after exclusion of premature children and children with extreme weights and head circumferences.</jats:p> <jats:p>CONCLUSIONS. Longer birth length, higher birth weight, or larger head circumferences within the normal birth size range are associated with higher IQ scores in Asian children. Our results suggest that antenatal factors reflected in altered rates of growth but within the normative range of pregnancy experiences play a role in generating cognitive potential. This has implications for targeting early intervention and preventative programs.</jats:p>
収録刊行物
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- Pediatrics
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Pediatrics 123 (6), e1011-e1016, 2009-06-01
American Academy of Pediatrics (AAP)