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Table 2 Characteristics of the study population according to quartiles of visceral fat area levels in men

From: Higher visceral fat area increases the risk of vitamin D insufficiency and deficiency in Chinese adults

 

Quartiles of visceral fat area (cm2)

P-valuea

 

Q1 (<89.95)

Q2 (89.95–115.72)

Q3 (115.72–140.46)

Q4 (≥140.46)

 

n

64

65

64

64

 

Age, y

42.36 ± 12.69

45.29 ± 12.03

46.92 ± 12.06

47.17 ± 11.58

bNS

Body mass index, kg/m2

22.87 ± 2.23

25.59 ± 2.21#

26.80 ± 2.51# &

29.45 ± 2.77# & $

0.000

Waist circumference, cm

81.28 ± 5.58

88.36 ± 4.93#

92.48 ± 5.50# &

99.57 ± 5.83# & $

0.000

Waist-to-hip ratio

0.86 ± 0.03

0.90 ± 0.02#

0.92 ± 0.02# &

0.95 ± 0.02# & $

0.000

Fat mass, kg

14.08 ± 3.52

19.90 ± 3.67#

23.35 ± 4.97# &

28.51 ± 5.64# & $

0.000

Free fat mass, kg

55.38 ± 6.43

57.40 ± 6.06#

58.17 ± 5.60# &

62.75 ± 5.93# & $

0.000

Percentage body fat, %

20.14 ± 3.63

25.68 ± 3.39#

28.50 ± 4.28# &

31.08 ± 4.02# & $

0.000

Systolic blood pressure, mmHg

118.89 ± 11.35

121.78 ± 12.12

118.41 ± 11.35

122.93 ± 14.70

bNS

Diastolic blood pressure, mmHg

78.19 ± 7.57

80.22 ± 10.05

80.57 ± 8.16

81.95 ± 10.95

bNS

Total cholesterol, mmol/L

4.71 ± 0.78

4.93 ± 1.08

5.17 ± 0.90#

5.31 ± 0.90# &

0.001

Triglycerides, mmol/L

0.99(0.72–1.46)

1.38(0.94–2.10)#

1.53(1.22–2.11)#

1.69(1.26–2.18)#

0.036

High-density lipoprotein cholesterol, mmol/L

1.22 ± 0.23

1.14 ± 0.21

1.13 ± 0.21

1.15 ± 0.18

bNS

Low-density lipoprotein cholesterol, mmol/L

2.85 ± 0.66

2.91 ± 0.68

3.24 ± 0.76# &

3.44 ± 0.79# &

0.000

Fasting plasma glucose, mmol/L

5.63 ± 0.95

6.10 ± 1.36

5.99 ± 1.13

6.13 ± 1.58

bNS

25(OH)D3, μg/L

42.30 ± 19.59

34.90 ± 20.93#

30.80 ± 20.15#

25.01 ± 14.05# &

0.000

Smoking, % yes

28.13

41.54#

43.75#

57.81#

0.009

Drinking, % yes

57.81

73.85

71.88

76.56

bNS

Doing exercise, % yes

51.56

67.69

67.19

73.44

bNS

Sunshine time, h/day

1.00(0.50–1.00)

1.00(0.00–3.00)

0.50(0.00–1.50)

1.00(0.00–2.00)

bNS

Vitamin D supplement users, % yes

1.56

0.00

6.25

1.56

bNS

  1. Values are percentages for categorical variables, means ± SDs for continuous variables with a normal distribution, or medians (95 % ranges) for continuous variables with a skewed distribution
  2. Abbreviations: 25(OH) D3, 25–hydroxyvitamin D3
  3. aComparison among four groups
  4. bNS = no significant at p value > .05
  5. #Compared with Q1, P < 0.05
  6. &Compared with Q2, P < 0.05
  7. $Compared with Q3, P < 0.05