Table 2 Participants’ characteristics and the comparison with the Standardized Growth Charts for Chinese Children (urban version, 2015) (Mean ± SD)

 3.0 ~ < 3.5

40 (0, 40)

15.5 ± 2.0

–

16.3 ± 2.0^*

16.3 ± 2.0^*

99.4 ± 4.0

–

99.6 ± 4.1

99.6 ± 4.1

 3.5 ~ < 4.0

84 (13, 71)

16.6 ± 2.2

20.2 ± 2.2^**

17.2 ± 2.5^*

17.7 ± 2.6^**

103.2 ± 4.1

104.9 ± 3.9

101.8 ± 4.3^**

102.3 ± 4.4

 4.0 ~ < 4.5

93 (31, 62)

17.8 ± 2.5

20.8 ± 2.5^**

18.7 ± 2.6^**

19.4 ± 2.8^**

106.7 ± 4.2

107.1 ± 3.3

106.9 ± 4.6

106.9 ± 4.2

 4.5 ~ < 5.0

151 (41, 110)

19.0 ± 2.8

23.4 ± 3.7^**

19.1 ± 2.2

20.3 ± 3.3^**

110.1 ± 4.5

111.8 ± 5.2^*

109.2 ± 4.1^*

109.9 ± 4.6

 5.0 ~ < 5.5

148 (40, 108)

20.4 ± 3.1

26.2 ± 4.1^**

20.6 ± 3.1

22.1 ± 4.2^**

114.1 ± 4.6

116.9 ± 4.4^**

112.7 ± 4.5^**

113.9 ± 4.8

 5.5 ~ < 6.0

148 (39, 109)

21.7 ± 3.5

27.0 ± 3.2^**

22.3 ± 4.2

23.5 ± 4.6^**

117.1 ± 4.7

118.3 ± 4.7

116.2 ± 5.1

116.8 ± 5.1

 6.0 ~ < 7.0

66 (37, 29)

23.7 ± 4.0

29.4 ± 4.7^**

24.4 ± 3.9

27.2 ± 5.0^**

121.8 ± 4.9

123.5 ± 5.5

119.2 ± 6.2^*

121.6 ± 6.1

 3.0 ~ < 3.5

41 (0,41)

14.9 ± 1.8

–

15.5 ± 1.9^*

15.5 ± 1.9^*

98.3 ± 3.8

–

98.2 ± 3.4

98.2 ± 3.4

 3.5 ~ < 4.0

69 (11, 58)

16.0 ± 2.0

19.4 ± 1.7^**

16.4 ± 1.8

16.9 ± 2.1^**

102.0 ± 4.0

104.6 ± 5.0

101.1 ± 3.5

101.6 ± 4.0

 4.0 ~ < 4.5

83 (21, 62)

16.9 ± 2.2

21.4 ± 3.4^**

17.1 ± 2.0

18.2 ± 3.1^**

105.4 ± 4.1

107.9 ± 4.9^*

104.9 ± 4.7

105.6 ± 4.9

 4.5 ~ < 5.0

125 (41, 84)

18.1 ± 2.5

21.8 ± 2.6^**

18.5 ± 2.4

19.6 ± 2.9^**

108.9 ± 4.4

109.4 ± 4.3

108.5 ± 4.1

108.8 ± 4.2

 5.0 ~ < 5.5

134 (22, 112)

19.5 ± 2.9

25.1 ± 5.2^**

20.0 ± 2.8^*

20.9 ± 3.8^**

112.8 ± 4.5

114.4 ± 6.0

112.3 ± 4.7

112.6 ± 5.0

 5.5 ~ < 6.0

106 (20, 86)

20.7 ± 3.2

26.1 ± 3.3^**

21.8 ± 4.2^*

22.6 ± 4.4^**

116.0 ± 4.6

118.6 ± 5.1^*

115.9 ± 5.1

116.4 ± 5.2

 6.0 ~ < 7.0

42 (29, 13)

22.3 ± 3.6

28.9 ± 4.6^**

23.2 ± 3.5

27.1 ± 5.0^**

120.2 ± 5.0

122.3 ± 5.2^*

118.1 ± 5.1

121.0 ± 5.5