E A Mitchell1, A W Stewart2, I Braithwaite3, R J Hancox4, R Murphy5, C Wall6, R Beasley3. 1. Department of Paediatrics, Child and Youth Health, Faculty of Medicine and Health Sciences, The University of Auckland, Auckland, New Zealand. 2. School of Population Health, The University of Auckland, Auckland, New Zealand. 3. Medical Research Institute of New Zealand, Wellington, New Zealand. 4. Department of Preventive and Social Medicine, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand. 5. Department of Medicine, Faculty of Medicine and Health Sciences, The University of Auckland, New Zealand. 6. Department of Nutrition, The University of Auckland, New Zealand.
Abstract
BACKGROUND: The reported association between birth weight and subsequent body mass index (BMI) is conflicting. OBJECTIVES: To examine the relationship between birth weight and BMI in children aged 6-7 years. METHODS: Secondary analysis of data from a multi-centre, multi-country, cross-sectional study (International Study of Asthma and Allergies in Childhood (ISAAC) Phase Three). Parents/guardians of children aged 6-7 years completed questionnaires about their children's birth weight, current height and weight and whether their mother smoked in the first year of the child's life. A general linear mixed model was used to determine the association between BMI and birth weight. RESULTS: A total of 72 111 children (17 countries) were included in the analysis. There was a positive association of birth weight with BMI (for each kg increase in birth weight the BMI at 6-7 increased by 0.47 (SE 0.02) kg/m2 ; p < 0.0001) with a clear gradient by birth weight category. There was no statistically significant interaction between birth weight and Gross National Income (GNI). CONCLUSIONS: There is a positive linear relationship between birth weight and BMI in 6-7 year old children, which is present in both high and low income countries.
BACKGROUND: The reported association between birth weight and subsequent body mass index (BMI) is conflicting. OBJECTIVES: To examine the relationship between birth weight and BMI in children aged 6-7 years. METHODS: Secondary analysis of data from a multi-centre, multi-country, cross-sectional study (International Study of Asthma and Allergies in Childhood (ISAAC) Phase Three). Parents/guardians of children aged 6-7 years completed questionnaires about their children's birth weight, current height and weight and whether their mother smoked in the first year of the child's life. A general linear mixed model was used to determine the association between BMI and birth weight. RESULTS: A total of 72 111 children (17 countries) were included in the analysis. There was a positive association of birth weight with BMI (for each kg increase in birth weight the BMI at 6-7 increased by 0.47 (SE 0.02) kg/m2 ; p < 0.0001) with a clear gradient by birth weight category. There was no statistically significant interaction between birth weight and Gross National Income (GNI). CONCLUSIONS: There is a positive linear relationship between birth weight and BMI in 6-7 year old children, which is present in both high and low income countries.
Authors: Elizabeth Reifsnider; David P McCormick; Karen W Cullen; Michael Todd; Michael W Moramarco; Martina R Gallagher; Lucia Reyna Journal: Acad Pediatr Date: 2017-12-23 Impact factor: 3.107
Authors: Kuan-Wen Wang; Russell J de Souza; Adam Fleming; Donna L Johnston; Shayna M Zelcer; Shahrad Rod Rassekh; Sarah Burrow; Lehana Thabane; M Constantine Samaan Journal: Sci Rep Date: 2018-01-26 Impact factor: 4.379