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Table 1 Characteristics of the study participants

From: Association between body composition and blood pressure in normal-weight Chinese children and adolescents

Characteristics

Total

Boys

Girls

p-value

N (%)

898(100)

469(52.2)

429(47.8)

 

Age, years

15.1(2.1)

15.3(2.0)

14.9(2.2)

0.004

Weight, kg

53.5(8.5)

56.0(9.3)

50.8(6.5)

 < 0.001

Height, cm

167.1(8.8)

171.2(9.0)

162.5(5.8)

 < 0.001

BMI, kg/m2

19.1(2.0)

19.0(2.0)

19.2(2.0)

0.019

WC, cm

70.9(5.9)

70.3(6.0)

71.6(5.7)

0.001

Blood pressure

 SBP, mm Hg

111.4(10.0)

113.9(10.3)

108.5(8.8)

 < 0.001

 DBP, mm Hg

68.1(7.3)

67.9(7.4)

68.3(7.1)

0.460

 Abnormal BP n (%)

171(19.0)

78(45.6)

93(54.4)

0.054

Body fat variables

 BFM, kga

10.1(6.8, 13.7)

7.4(5.5, 10.2)

12.8(10.3, 16.3)

 < 0.001

 FMP, %a

19.2(13.0, 25.7)

13.5(10.6, 17.3)

25.6(21.4, 29.5)

 < 0.001

 VFLa

4.0(2.0, 5.0)

2.0(2.0, 4.0)

5.0(4.0, 6.0)

 < 0.001

 VFL/FMPa ratio, %a

19.2(13.0, 22.3)

18.2(14.7, 22.4)

19.6(17.5, 22.3)

 < 0.001

 LBM, kga

41.3(36.9,48.8)

48.5(43.3,53.1)

37.6(35.1,40.2)

 < 0.001

Smoking, n (%)

 Never

624(78.3)

259(64.0)

365(93.1)

 < 0.001

 Try

124(15.6)

100(24.7)

24(6.1)

 

 Current

49(6.1)

46(11.4)

3(0.8)

 

Drinking, n (%)

 Never

481(60.4)

205(50.9)

276(70.2)

 < 0.001

 Try

221(27.8)

134(33.3)

87(22.1)

 

 Current

94(11.8)

64(15.9)

30(7.6)

 
  1. Characteristics are shown as mean (SD), median (25th, 75th percentile) or n (%)
  2. aSkewed distribution; Abnormal BP, SBP/DBP ≥ P90 by sex, age and height; BFM Body fat mass, FMP Fat mass percentage, VFL Visceral fat level, VFL/FMP ratio, which reflects the degree of visceral fat deposited, LBM Lean body mass; P-value denote result of t-test, χ2 test or Mann–Whitney non-parametric test between boys and girls