The data of Figure 2 replotted on the BMI SD score scale. The centiles curves of Figure 2 appear as horizontal and equally spaced straight lines. For each subject A to E the BMI SD score changes linearly over time, indicating a constant rate of centile crossing. Subjects AA to EE show the same patterns as A to E respectively, but starting at age 13.
Cole BMC Pediatrics 2004 4:6 doi:10.1186/1471-2431-4-6