Figure 1.

BMI trajectories (5–14 years) by RWG group and IOTF BMI reference bands. Estimated from fractional polynomial models with mixed effects and adjustment for maternal BMI, maternal smoking, birth order, breastfeeding, early introduction to solid foods, family income, maternal education and ethnicity. Covariates were held constant—i.e. continuous covariates were centred on its mean values and the reference category was used for categorical covariates. RWG: rapid weight gain; IOTF: International Obesity Task Force