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Table 1 Characteristics of children aged 6-7 years by quartiles of waist circumference

From: Waist circumference and risk of elevated blood pressure in children: a cross-sectional study

 

Quartiles

 
 

1st

2nd

3rd

4th

 
 

Mean ± SD

Mean ± SD

Mean ± SD

Mean ± SD

p -value

Boys

     

   Number

381

286

257

288

 

   Age, years

6.4 ± 0.3

6.4 ± 0.3

6.5 ± 0.5

6.4 ± 1.4

0.0007

   Height, cm

117.6 ± 4.6

119.3 ± 4.4

121.2 ± 4.8

123.4 ± 4.5

< 0.0001

   Weight, kg

20.9 ± 2.4

22.5 ± 2.4

24.8 ± 3.1

31.0 ± 5.3

< 0.0001

   BMI, kg/m2

15.1 ± 1.2

15.8 ± 1.3

16.9 ± 1.7

20.3 ± 2.9

< 0.0001

   NC, cm

25.6 ± 1.1

26.3 ± 1.8

27.2 ± 1.3

29.2 ± 1.9

< 0.0001

   WC, cm

52.2 ± 1.7

56.0 ± 0.8

59.4 ± 1.1

67.8 ± 5.8

< 0.0001

   HC, cm

63.4 ± 3.1

66.1 ± 2.8

69.1 ± 5.1

76.7 ± 5.4

< 0.0001

   SBP, mmHg

95.0 ± 13.8

97.1 ± 13.3

103.6 ± 13.2

110.3 ± 15.6

< 0.0001

   DBP, mmHg

58.0 ± 11.4

60.1 ± 11.8

64.2 ± 11.6

68.4 ± 13.6

< 0.0001

   E-SBP, %

7.6

10.1

17.5

30.9

< 0.0001

   E-DBP, %

7.1

8.7

14.4

21.9

< 0.0001

   EBP, %

11.0

15.0

24.5

38.9

< 0.0001

Girls

     

   Number

294

286

273

269

 

   Age, years

6.4 ± 0.29

6.5 ± 0.5

6.5 ± 0.3

6.5 ± 0.4

0.0747

   Height, cm

116.3 ± 4.78

117.9 ± 4.6

119.3 ± 4.5

122.1 ± 4.8

< 0.0001

   Weight, kg

19.9 ± 2.59

21.4 ± 2.3

23.2 ± 2.8

28.1 ± 4.8

< 0.0001

   BMI, kg/m2

14.7 ± 1.23

15.4 ± 1.3

16.3 ± 1.5

18.8 ± 2.5

< 0.0001

   NC, cm

24.8 ± 1.04

25.3 ± 1.1

25.9 ± 1.8

27.5 ± 1.6

< 0.0001

   WC, cm

50.3 ± 1.75

54.1 ± 0.8

57.3 ± 1.1

64.1 ± 4.2

< 0.0001

   HC, cm

62.8 ± 3.08

65.2 ± 4.6

68.2 ± 3.3

73.9 ± 5.0

< 0.0001

   SBP, mmHg

92.2 ± 14.6

95.2 ± 13.3

98.2 ± 14.0

103.0 ± 13.5

< 0.0001

   DBP, mmHg

57.2 ± 10.8

58.4 ± 11.0

61.3 ± 12.6

64.0 ± 12.2

< 0.0001

   E-SBP, %

5.1

8.0

10.3

19.7

< 0.0001

   E-DBP, %

5.1

6.6

8.8

15.2

< 0.0001

   EBP, %

6.8

11.9

13.6

26.8

< 0.0001

  1. BMI, body mass index; NC, neck circumference; WC, waist circumference; HC, hip circumference; SBP, systolic blood pressure; DBP, diastolic blood pressure; E-SBP, elevated systolic blood pressure; E-DBP, elevated diastolic blood pressure; EBP, elevated blood pressure