25(OH)D < 20 ng/mL (n = 53)

25(OH)D ≥ 20 ng/mL (n = 12)

t

P

FBG (mmol/L)

9.77 ± 3.57

8.71 ± 2.96

0.949

0.346

HbA1c (%)

9.22 ± 2.36

7.96 ± 1.8

1.734

0.088