Table 1 Baseline characteristics of the study population stratified by BMI and WC

Age (years)

11.3 ± 3.1 (7,20)

11.2 ± 3.0 (7,20)

10.5 ± 2.8 (7,20)

<0.001

11.2 ± 3.1 (7,20)

11.1 ± 2.9 (7,20)

11.5 ± 3.0 (7,20)

<0.001

Sex

Boys

28652 (71.4%)

6568 (16.4%)

4885 (12.2%)

<0.001

31414 (78.5%)

5210 (13.0%)

3407 (8.5%)

<0.001

Girls

31813 (83.7%)

3684 (9.7%)

2512 (6.6%)

31532 (83.2%)

3899 (10.3%)

2477 (6.5%)

Residence

Urban

35067 (74.6%)

6865 (14.6%)

5091 (10.8%)

<0.001

36525 (77.9%)

6184 (13.2%)

4168 (8.9%)

<0.001

Rural

25398 (81.7%)

3387 (10.9%)

2306 (7.4%)

26421 (85.1%)

2925 (9.4%)

1716 (5.5%)

Height (cm)

147 ± 16 (106,196)

150 ± 15 (110,198)

149 ± 15 (84,196)

<0.001

147 ± 16 (84,196)

150 ± 14 (85,191)

155 ± 15 (117,198)

<0.001

Weight (kg)

38.8 ± 12.5 (13.9,86.7)

50.3 ± 15.3 (18.6,105.5)

57.6 ± 19.1 (17.9,139.1)

<0.001

38.9 ± 12.6 (13.9,101.6)

50.7 ± 13.8 (21.0,105.4)

63.2 ± 18.5 (20.0,139.1)

<0.001

BMI(kg/m²)

17.3 ± 2.3 (8.6,30.7)

21.8 ± 2.5 (11.9,27.8)

25.2 ± 3.9 (12.1,63.5)

<0.001

17.5 ± 2.6 (8.6,48.9)

21.9 ± 2.7 (12.1,63.5)

25.7 ± 3.8 (8.7,47.3)

<0.001

WC (cm)

60 ± 7 (26,110)

70 ± 9 (23,101)

78 ± 12 (35,131)

<0.001

60 ± 7 (23,80)

72 ± 6 (58,87)

84 ± 9 (64,131)

<0.001

SBP (mmHg)

102 ± 12 (62,180)

107 ± 13 (70,180)

110 ± 15 (65,180)

<0.001

102 ± 12 (62,180)

107 ± 13 (65,180)

112 ± 14 (70,180)

<0.001

DBP (mmHg)

65 ± 9 (40,137)

67 ± 9 (40,120)

69 ± 10 (40,110)

<0.001

65 ± 9 (40,137)

67 ± 9 (40,120)

70 ± 10 (40,110)

<0.001