Table 3 Comparison of Vitamin D level among studied VDR genotypes in KC patients.

From: Thyroid gland dysfunction and vitamin D receptor gene polymorphism in keratoconus

Parameter

Taq I genotypes

P value

TT (n = 37patients)

Tt (n = 80 patients)

tt (n = 60 patients)

Vitamin D level (ng/ml)

Median (Min–Max)

19.3 (10.0–62.0)

10.2 (7.6–51.0)

9.5 (6.9–42.0)

<0.001

Vitamin D groups

Sufficiency n (%)

10 (27.0%)

5 (6.2%)

4 (6.7%)

<0.001

Insufficiency n (%)

27 (73.0%)

48 (60.0%)

20 (33.3%)

Deficiency n (%)

0 (0.0%)

27 (33.8%)

36 (60.0%)

Parameter

Apa I genotypes

P value

AA (n = 64)

Aa (n = 85)

aa (n = 28)

Vitamin D level (ng/ml)

Median (Min–Max)

12.8 (7.6–62.0)

10.4 (7.5–59.0)

9.9 (6.9–51.0)

0.243

Vitamin D groups

Sufficiency n (%)

11 (17.2%)

7 (8.2%)

1 (3.6%)

0.072

Insufficiency n (%)

35 (54.7%)

48 (56.5%)

12 (42.8%)

Deficiency n (%)

18 (28.1%)

30 (35.3%)

15 (53.6%)

Parameter

Bsm I genotypes

P value

BB (n = 61)

Bb (n = 75)

bb (n = 41)

Vitamin D level (ng/ml)

Median (Min–Max)

12.0 (6.9–62.0)

10.0 (7.3–59.0)

12.8 (7.6–42.0)

0.567

Vitamin D groups

Sufficiency n (%)

4 (6.6%)

8 (10.7%)

7 (17.1%)

0.441

Insufficiency n (%)

37 (60.7%)

38 (50.7%)

20 (48.8%)

Deficiency n (%)

20 (32.7%)

29 (38.6%)

14 (34.1%)

  1. The bold numbers refer to the statistically significant values.
  2. VDR vitamin D receptors, KC keratoconus.