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Table 1 Baseline demographic and biochemical indices of T2DM cases and control subjects according to their vitamin D status

From: Does vitamin D play a significant role in type 2 diabetes?

Parameters (T = 912)

T2DM Cases (N = 429)

Non-diabetic Controls (N = 483)

Serum 25OHD

<20 ng/ml

Serum 25OHD

≥20 ng/ml

p value

Serum 25OHD

<20 ng/ml

Serum 25OHD

≥20 ng/ml

p value

Mean ± SD

Mean ± SD

Mean ± SD

Mean ± SD

(n = 392)

(n = 37)

(n = 449)

(n = 34)

Anthropometric indices

Age (Years)

56.37 ± 10.34

57.79 ± 12.19

0.44

48.36 ± 12.78

51.44 ± 13.51

0.18

BMI (Kg/m 2 )

27.17 ± 5.14

26.50 ± 3.93

0.44

25.78 ± 4.54

26.68 ± 5.20

0.27

WC (cm)

96.99 ± 10.68

94.31 ± 9.21

0.14

92.10 ± 10.71

91.59 ± 10.61

0.78

WHR

0.94 ± 0.10

0. 93 ± 0.07

0.55

0.91 ± 0.07

0.89 ± 0.08

0.11

Duration of T2DM (Years)

8.30 ± 7.26

11.23 ± 10.55

0.03*

-

-

-

Biochemical indices

FBS (mg/dl)

150.43 ± 64.51

138.80 ± 47.09

0.29

88.18 ± 12.11

87.88 ± 13.51

0.89

PPBS (mg/dl)

190.72 ± 70.50

187.42 ± 76.74

0.79

-

-

-

HbA1c (%)

8.36 ± 1.79

8. 26 ± 2.21

0.75

5.67 ± 0.49

5.67 ± 0.54

0.82

FI (uIU/ml)

11.29 ± 6.95

8.27 ± 4.17

0.01*

12.11 ± 5.45

10.00 ± 5.00

0.03*

HOMA-IR

3.93 ± 3.62

3.04 ± 2.24

0.04*

2.71 ± 1.60

2.20 ± 1.24

0.08

  1. By student’s t-test, *: Significant, SD: Standard deviation.
  2. BMI: Body mass index, WC: Waist circumference, WHR: Waist-Hip-Ratio.
  3. FBS: Fasting Blood Sugar, PPBS: Post-Prandial Blood Sugar, HbA1c: Glycated hemoglobin, FI: Fasting Insulin, HOMA-IR: Homeostasis Model of Assessment-Insulin Resistance Index.
  4. Vitamin D-Deficient: 25OHD <20ng/ml.
  5. Vitamin D-Non-deficient: 25OHD ≥20ng/ml.