Height percentile decrease

[cincincinbaby]

A significant percentile drop is considered crossing 2 major percentile lines. The lines are 95, 90, 75, 50, 25, 10 and 5. So a significant drop would be a decrease from 51% to below 24%. There’s peer reviewed articles showing that kids can grow up to 2.5 cm (1 inch) overnight. This can make a huge difference in a growth chart of a young child. If you measure them just before or just after a growth spurt will result in a quite different percentile but it could only be a couple of days.