Journal
ARCHIVES OF DISEASE IN CHILDHOOD
Volume 93, Issue 7, Pages 566-569Publisher
BMJ PUBLISHING GROUP
DOI: 10.1136/adc.2007.126854
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Funding
- Medical Research Council [G9815508, MC_U106179472, MC_EX_MR/J000361/1, MR/J000361/1] Funding Source: Medline
- Wellcome Trust Funding Source: Medline
- MRC [MC_EX_G0701655, MC_U106179472] Funding Source: UKRI
- Medical Research Council [MC_U106179472, MC_EX_G0701655, MR/J000361/1, G9815508] Funding Source: researchfish
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Background: The WHO 2006 Child Growth Standard is based on data from international optimally nourished breastfed infants from birth to age 5 years. Objective: To assess the potential effect of its use on weight and growth monitoring of UK children. Participants: Full-term members of two population-based UK birth cohorts: the Children in Focus sub-cohort of the Avon Longitudinal Study of Parents and Children (ALSPAC) (n = 1335) and the Gateshead Millennium Baby Study (GMS; n = 923). Design: Growth data from birth to 5 years were converted into z-scores relative to the WHO 2006 standard. Results: Compared with the WHO standard, both UK cohorts had higher birth weights (mean z-scores: GMS, 0.17; ALSPAC, 0.34) and ALSPAC had higher birth lengths. After birth, length showed a good fit at all ages. By 2-4 months, both cohorts were similar in weight to the WHO median (mean WHO weight z-score at 4 months: GMS, 0.01; ALSPAC, -0.07), but thereafter the UK cohorts were heavier (mean WHO weight z-score at 12 months: GMS, 0.57; ALSPAC, 0.65). At age 12 months, the risk of being classified as underweight (weight <2nd centile) was considerably lower according to the WHO standard than by the UK 1990 Growth Reference (RR = 0.15, 95% CI = 0.07 to 0.32), and the risk of being classified as obese at 4-5 years (body mass index >98th centile) was slightly increased (RR = 1.35, 95% CI = 1.02 to 1.78). Conclusions: Adoption of the WHO 2006 Growth Charts would set a markedly lower standard of weight gain beyond the age of 4 months for UK infants and could support efforts to avoid future childhood obesity. However, the WHO standard is not representative of size at birth in the UK.
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