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Fig. 2 | BMC Pediatrics

Fig. 2

From: Novel type of references for BMI aligned for onset of puberty – using the QEPS growth model

Fig. 2

Upper panel: References in kg/m2 (left axis) and in kg0.5/m (right axis) for total BMI and the basic BMI (BMI gained independently of puberty (QES-function) for girls (red, left) and boys (blue, right). Curves are aligned for age at onset of pubertal height spurt (AgeP5). Median total BMI (red/blue solid line, ±1SDS (red/blue dotted line), and ± 2SDS (red/blue dashed line)) and median basic BMI (black). General differences in timing between pubertal height and weight functions result in an undulation of aligned BMI functions. Lower panel: BMI gain resulting from the P-function of the QEPS (P-BMI) provides a puberty-specific BMI reference. Specific P-function-derived BMI as median, ±1SDS (dotted line), and ± 2SDS (dashed line). The individual onset of puberty was identified and aligned based on the age at which 5% (AgeP5) of the total specific P-function growth (Pmax) for height had occurred. General differences in timing between pubertal height and weight functions result in an undulation of aligned BMI functions

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