Table 1 Baseline characteristics of the participants by weight status (N = 4262)

Gender

<0.001^*

Boys

1603(48)

384(59)

209(76.6)

2196(51.5)

Girls

1735(52)

267(41)

64(23.4)

2066(48.5)

Age

0.035^*

5-8y

676(20.3)

140(21.5)

67(24.5)

883(20.7)

9-11y

1148(34.4)

231(35.5)

107(39.2)

1486(34.9)

12-14y

1152(34.5)

211(32.4)

85(31.1)

1448(34)

15-18y

362(10.8)

69(10.6)

14(5.1)

445(10.4)

Race

0.197

Han

2762(82.7)

524(80.5)

212(77.7)

3498(82.1)

Manchu

323(9.7)

75(11.5)

37(13.6)

435(10.2)

Mongol

122(3.7)

26(4)

15(5.5)

163(3.8)

Others

131(3.9)

26(4)

9(3.3)

166(3.9)

Weight(kg)

37.11 ± 10.8

49.18 ± 14.63

60.66 ± 18.44

40.46 ± 13.86

<0.001^*

Height(cm)

143.79 ± 14.77

145.88 ± 15.1

146.52 ± 16

144.28 ± 14.93

<0.001^*

BMI(kg/m ² )

17.5 ± 2.1

22.4 ± 2.6

27.5 ± 3.9

18.9 ± 3.7

<0.001^*

BP status

<0.001^*

Normal

2304(69)

335(51.5)

99(36.3)

2738(64.2)

Prehypertension

492(14.7)

116(17.8)

44(16.1)

652(15.3)

Hypertension

542(16.2)

200(30.7)

130(47.6)

872(20.5)