Table 3. Z score distribution of weight, height and body mass index (BMI) among preschool children in the city of Taubaté, state of São Paulo, Brazil, 2009.

Z scores	Mean	Standard deviation	Median
Weight/height	0.50	? 1.22	0.46
Height/age	- 0.03	? 1.07	0.09
Weight/age	0.33	? 1.19	0.25
BMI/age	0.51	? 1.23	0.42