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Table 3 Characteristics of the study population according to quartiles of visceral fat area levels in women

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

 

Pre-menopausal women

 

Quartiles of visceral fat area (cm2)

P-valuea

Q1 (<53.15)

Q2 (53.15–66.18)

Q3 (66.18–84.47)

Q4 (≥84.47)

n

153

144

163

153

 

Age, y

33.09 ± 6.30

36.54 ± 7.54#

38.35 ± 6.91# &

41.27 ± 7.41# & $

0.000

Body mass index, kg/m2

20.51 ± 1.33

21.54 ± 1.46#

22.44 ± 1.77# &

25.48 ± 3.46# & $

0.000

Waist circumference, cm

73.06 ± 3.74

76.67 ± 3.48#

79.62 ± 3.92# &

88.27 ± 7.90# & $

0.000

Waist-to-hip ratio

0.81 ± 0.02

0.84 ± 0.02#

0.86 ± 0.02# &

0.90 ± 0.04# & $

0.000

Fat mass, kg

14.39 ± 2.71

17.02 ± 2.90#

18.99 ± 3.08# &

24.93 ± 5.80# & $

0.000

Free fat mass, kg

39.65 ± 3.46

39.84 ± 3.69

40.16 ± 3.42

43.23 ± 4.85# & $

0.000

Percentage body fat, %

26.53 ± 3.69

29.85 ± 3.74#

32.01 ± 3.58# &

36.26 ± 4.46# & $

0.000

Systolic blood pressure, mmHg

102.64 ± 12.01

102.31 ± 10.81

106.97 ± 112.46#

110.85 ± 15.45# &

0.000

Diastolic blood pressure, mmHg

69.03 ± 8.46

69.18 ± 7.37

72.13 ± 8.73

74.38 ± 10.18# &

0.001

Total cholesterol, mmol/L

4.42 ± 0.72

4.63 ± 0.77#

4.73 ± 0.87#

4.90 ± 0.87# & $

0.000

Triglycerides, mmol/L

0.66(0.58–0.86)

0.79(0.64–1.07)#

0.94(0.69–1.25)# &

1.16(0.80–1.55)# & $

0.000

High-density lipoprotein cholesterol, mmol/L

1.46 ± 0.29

1.41 ± 0.30

1.32 ± 0.24# &

1.26 ± 0.25# &

0.000

Low-density lipoprotein cholesterol, mmol/L

2.41 ± 0.62

2.64 ± 0.63#

2.81 ± 0.76# &

3.02 ± 0.75# & $

0.000

Fasting plasma glucose, mmol/L

5.29 ± 0.47

5.37 ± 0.45

5.55 ± 0.78# &

5.77 ± 0.90# & $

0.000

25(OH)D3, μg/L

43.25 ± 28.90

42.30 ± 28.02

38.39 ± 24.11

35.80 ± 27.38# &

0.002

Smoking, % yes

0.65

0.69

0.61

0.65

bNS

Drinking, % yes

22.22

25.00

24.54

29.41

bNS

Doing exercise, % yes

44.44

48.61

43.56

47.06

bNS

Sunshine time, h/day

1.00(0.50–0.10)

1.00(0.00–1.00)

1.00(0.50–0.10)

1.00(0.50–0.10)

bNS

Vitamin D supplement users, % yes

1.96

0.69

1.23

0.65

bNS

 

Post-menopausal women

 
 

Quartiles of visceral fat area (cm2)

P-valuea

 

Q1(<71.55)

Q2(71.55–91.97)

Q3(91.97–115.73)

Q4(≥115.73)

 

n

59

59

59

58

 

Age, y

58.17 ± 7.74

59.25 ± 5.49

58.95 ± 5.60

59.38 ± 5.81

bNS

Body mass index, kg/m2

21.43 ± 1.60

22.62 ± 1.22#

24.18 ± 2.00# &

27.64 ± 2.51# & $

0.000

Waist circumference, cm

75.57 ± 4.19

79.47 ± 2.73#

84.24 ± 4.41# &

93.64 ± 6.10# & $

0.000

Waist-to-hip ratio

0.82 ± 0.02

0.86 ± 0.01#

0.89 ± 0.01# &

0.93 ± 0.03# & $

0.000

Fat mass, kg

16.80 ± 2.85

19.42 ± 2.35#

22.66 ± 3.51# &

29.18 ± 4.87# & $

0.000

Free fat mass, kg

38.72 ± 3.89

38.79 ± 2.88

39.66 ± 3.24

42.51 ± 4.45# & $

0.000

Percentage body fat, %

30.18 ± 3.77

33.34 ± 3.03#

36.25 ± 3.45# &

40.55 ± 3.97# & $

0.000

Systolic blood pressure, mmHg

115.14 ± 14.90

120.78 ± 18.67

122.36 ± 13.65

124.88 ± 15.37

bNS

Diastolic blood pressure, mmHg

75.97 ± 9.47

76.72 ± 8.67

77.22 ± 8.23

81.63 ± 10.04# & $

0.029

Total cholesterol, mmol/L

5.64 ± 0.93

5.84 ± 0.10

5.88 ± 1.17

5.58 ± 0.82

bNS

Triglycerides, mmol/L

1.10(0.67–1.40)

1.21 (0.93–1.50)#

1.40(1.07–1.94)# &

158(1.16–1.89)# &

0.000

High-density lipoprotein cholesterol, mmol/L

1.55 ± 0.30

1.42 ± 0.23#

1.33 ± 0.25#

1.35 ± 0.26#

0.000

Low-density lipoprotein cholesterol, mmol/L

3.31 ± 0.80

3.57 ± 0.73

3.54 ± 0.85

3.33 ± 0.81

bNS

Fasting plasma glucose, mmol/L

5.75 ± 1.34

6.06 ± 1.13

6.35 ± 1.51

6.10 ± 0.84

bNS

25(OH)D3, μg/L

33.04 ± 22.62

33.63 ± 20.89

29.77 ± 20.90

27.78 ± 19.64

bNS

Smoking, % yes

3.39

6.78

8.47

10.34

bNS

Drinking, % yes

33.90

38.98

40.68

46.55

bNS

Doing exercise, % yes

32.20

30.51

22.03

18.97

bNS

Sunshine time, h/day

1.00(0.50–0.10)

1.00(0.00–1.00)

1.00(0.50–0.10)

1.00(0.50–0.10)

bNS

Vitamin D supplement users, % yes

3.39

5.08

6.78

5.17

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