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Table 1 Distribution of body mass index among children participating in the current study

From: Socio-demographic and lifestyle factors for child’s physical growth and adiposity rebound of Japanese children: a longitudinal study of the 21st century longitudinal survey in newborns

 

WHO standard*

Boy (%)

Girl (%)

 

1 ½ years

2 ½ years

3 ½ years

4 ½ years

5 ½ years

1 ½ years

2 ½ years

3 ½ years

4 ½ years

5 ½ years

99 percentile-

1.9

2.6

2.0

1.8

2.4

1.6

1.8

1.3

1.1

1.3

95 percentile -

4.8

5.9

4.9

3.7

3.2

4.7

5.6

3.9

3.1

2.5

85 percentile -

12.9

13.6

12.5

9.3

8.5

11.7

14.3

11.6

8.1

7.4

75 percentile -

12.0

11.2

12.6

11.3

9.5

10.9

12.3

11.5

11.0

9.5

50 percentile -

26.2

28.7

28.0

29.0

27.2

28.9

24.9

31.7

28.9

27.9

25 percentile -

22.6

19.9

22.9

28.2

26.8

25.2

24.1

22.7

29.9

29.0

< 25 percentile

19.5

18.2

17.1

16.8

22.4

17.1

17.0

17.3

18.0

22.5

 

IOTF standard †

  
 

Boy (%)

Girl (%)

 

2 ½ years

3 ½ years

4 ½ years

5 ½ years

2 ½ years

3 ½ years

4 ½ years

5 ½ years

  

Obesity

1.3

1.0

1.2

1.6

1.2

1.1

1.3

1.6

  

Overweight

7.2

5.9

5.0

5.1

8.5

7.2

7.6

7.5

  
  1. *The WHO defines two different standards for younger children (0–5 years) and older children and adolescent (5 years -). We applied “WHO growth reference for school-aged children and adolescents” for the Japanese children age at 5 ½ years, and “WHO child growth standards based on length/height, weight and age” for those at the rest of the ages [19, 21].
  2. †The IOTF standard provides equivalent BMI cutoff values, 25 kg/m2 for overweight and 30 kg/m2 for obesity, at the age of 18 years for both boys and girls [10].
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