Chunk #7 — Methods — Calculations

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Earlier mother's age at menarche predicts rapid infancy growth and childhood obesity.

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In the Children in Focus subcohort, all weight and length measurements were converted to sex- and age-independent standard deviation (SD) scores in each participant by comparison with the UK 1990 growth reference [19]. Weight gain and growth were calculated as changes in SD score over time (between 0–2 y and 2–9 y).