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Table 1 Relationships of demographic and clinical characteristics with vitamin D levels in aqueous humor and serum from patients with cataract

From: Aqueous humor and serum 25-Hydroxyvitamin D levels in patients with cataracts

 

N

Aqueous humor 25(OH) D level

P value

Serum 25(OH) D level

P value

Median (IQR)

Median (IQR)

Demographic characteristics

 Total number

136

10.3 (5.5–16)

 

15.6 (11.6–25.8)

 

 Sex

  

0.010

 

0.028

  Male

69

11.5 (8.1–17.3)

 

20.1 (13.4–27.3)

 

  Female

67

7.5 (4.7–14.4)

 

14.2 (10.8–23.2)

 

 Age (yr)

  

0.571

 

0.702

  ≤ 59

36

9.7 (4.6–13.9)

 

14.6 (9.3–27.9)

 

  60–69

49

10.0 (4.7–17.4)

 

19.6 (12.9–23.3)

 

  70–79

34

10.1 (5.8–14.5)

 

15.4 (13.0–29.6)

 

  ≥ 80

17

11.0 (8.9–17.9)

 

13.6 (10.7–27.8)

 

 Average outdoor activity time (hr/day)

  

0.146

 

0.432

  < 2

51

11.5 (6.6–16.3)

 

14.6 (11.1–23.2)

 

  2–6

61

8.7 (4.7–13.6)

 

16.1 (12.5–28.4)

 

  ≥ 6

24

13.0 (6.0–17.7)

 

20.1 (12.0–23.6)

 

 Occupation

  

0.373

 

0.185

  None

48

10.8 (7.0–17)

 

15.2 (11.5–23.8)

 

  Housewife/clerk

49

8.2 (4.8–13.8)

 

14.6 (10.8–23.4)

 

  Farmer/outdoor worker

39

10.5 (6–17.4)

 

20.1 (12.9–29.6)

 

 Vitamin D supplementation

  

0.451

 

0.144

  No

127

10.4 (5.4–16.7)

 

15.3 (11.6–24.1)

 

  Yes

9

8.1 (5.8–12.0)

 

29.2 (15.2–30.1)

 

Clinical characteristics

 Type of cataract

  

0.006

 

0.631

  Senile

87

8.8 (4.4–13.6)

 

16.1 (11.6–26.3)

 

  Diabetic

49

12.6 (7.5–20.2)

 

14.7 (12.4–23.2)

 

 Hypertension

  

0.276

 

0.879

  No

65

9.1 (4.7–14.6)

 

15.6 (11.9–26.3)

 

  Yes

71

10.9 (5.8–16.7)

 

15.6 (11.6–24.9)

 

 Lung disease

  

0.195

 

0.306

  No

108

9.9 (5.5–15.6)

 

16.2 (12.1–25.8)

 

  Yes

27

12.6 (7.4–17.9)

 

13.5 (10.8–26.8)

 

 Previous thyroid operation

  

0.232

 

0.122

  No

134

10.4 (5.5–16.2)

 

15.7 (11.7–26.0)

 

  Yes

2

6 (3.0–9.0)

 

9.5 (5.8–13.2)

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