Table 5.

 z scores and centiles corresponding to BMI as % of median, by age from 2-18 years, averaged by sex across six datasets

Age	75% BMI			80% BMI			85% BMI
	Male	Female		Male	Female		Male	Female
2 years
z score	−4.1	−3.9		−3.1	−2.9		−2.2	−2.1
Centile	0.003			0.1			2
6 years
z score	−4.0	−3.6		−2.9	−2.7		−2.0	−1.9
Centile	0.007			0.3			3
10 years
z score	−3.3	−2.9		−2.4	−2.1		−1.6	−1.5
Centile	0.1			1			6
14 years
z score	−2.9	−2.6		−2.2	−1.9		−1.5	−1.4
Centile	0.3			2			8
18 years
z score	−2.9	−2.7		−2.1	−2.0		−1.5	−1.4
Centile	0.2			2			7