Figure 1 | Scientific Reports

Figure 1

From: Prenatal exposures to mixtures of endocrine disrupting chemicals and children’s weight trajectory up to age 5.5 in the SELMA study

Figure 1

(Adapted from Tanner et al., 2020).

Double-logistic growth model to predict weight trajectories. The double-logistic growth model is in this analysis applied to predict children’s weight trajectories from birth to 5.5 years of age. The infant period is captured by the first of two logistic functions. This first function is exponential with weight (kg) increasing with age (months) and undertakes an inflection point where the rate constant is determined by the slope of the tangent line (β). This slope is in this analysis labeled as the infant growth spurt rate (kg/month). Growth velocity is the first derivative of the logistic growth model, and the peak growth velocity (PGV) is reached at age = δ.

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