When children get older the number of those who are still considered picky eaters decreases significantly. However, research shows that around twenty per cent of children between the ages eight and twelve are picky eaters. (Nederkoorn o.fl., 2014).
Eftir það tímabil minnkar hlutfall barna sem teljast matvönd en rannsóknir sýna að allt að 20% barna á aldrinum átta til tólf ára séu matvönd (Nederkoorn, Jansen og Havermans, 2014).