From: Childhood obesity classification systems and cardiometabolic risk factors: a comparison of the Italian, World Health Organization and International Obesity Task Force references
ISPED
WHO
IOTF
Normal weight
1
Overweight
3.481 (2.730–4.439)
2.686 (1.959–3.683)
3.934 (3.059–5.060)
Obesity
6.198 (4.898–7.843)
6.446 (5.009–8.295)
6.728 (5.276–8.579)