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Table 1 Characteristics of study participants

From: Genetic influence on serum 25-hydroxyvitamin D concentration in Korean men: a cross-sectional study

Variables

25-Hydroxyvitamin D, ng/ml

P trenda

≤ 11.7 (n = 374)

11.8 ~ 17.2 (n = 374)

≥ 17.3 (n = 378)

25-Hydroxyvitamin D, ng/ml

9.07 ± 0.15b

14.47 ± 0.14

22.42 ± 0.14

< 0.001

Age, year

40.98 ± 14.23

44.47 ± 13.78

47.21 ± 14.37

< 0.001

Body mass index, kg/m2

24.57 ± 0.16

24.65 ± 0.15

24.29 ± 0.15

0.152

Smoking

 Current-smoker

40.34 [181]c

43.81 [162]

28.52 [134]

 

 Past-smoker

20.80 [87]

19.96 [93]

25.90 [132]

< 0.001

 Never-smoker

38.86 [105]

36.23 [118]

45.58 [112]

 

Current-drinker

77.44 [295]

83.40 [301]

62.87 [291]

< 0.001

Physical exercise

 ≥ 3 times/week

20.26 [69]

29.43 [84]

22.42 [106]

 

 1 ~ 2 times/week

18.97 [59]

13.31 [63]

14.78 [63]

< 0.001

 <  1 time/week

60.77 [233]

57.25 [217]

62.80 [198]

 

 Multivitamin intaker

14.2 [59]

20.4 [93]

21.6 [94]

< 0.001

 Calcium, mmol/L

2.37 ± 0.01

2.36 ± 0.01

2.36 ± 0.01

0.072

  1. For some study participants, information was not available for smoking status (n = 2), alcohol consumption (n = 1), physical exercise (n = 34), or multivitamin intake (n = 10)
  2. aP values for trend were obtained by linear-by-linear association of chi-square test for categorical variables or by linear regression analysis for continuous variables
  3. bData were presented as age-adjusted mean ± standard error for continuous variables. Age-adjusted mean values were calculated by analysis of covariance test
  4. cData were presented as number (age-standardized percentage) for categorical variables. n in brackets indicates the number of study participants
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Genes & Nutrition

ISSN: 1865-3499

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