Table 3

Quartiles of serum 25OHD in multivariate logistic regression model predictor HbA1c >6.5%

Quartiles serum 25OHD
(N, %)		OR (95% CI)
Q1: 0 to 41 nmol/L
N=4879 (26.4)		2.60 (2.26 to 3.01)*
3.08 (2.65 to 3.59)†
2.37 (2.03 to 2.77)‡*
Q2: 42 to 56 nmol/L
N=4879 (26.4)		1.85 (1.58 to 2.16)A*
1.97 (1.68 to 2.31)B*†
1.68 (1.56 to 1.61)‡*
Q3: 57 to 72 nmol/L
N=4430 (24)		1.48 (1.26 to 1.74)*
1.49 (1.27 to 1.75)†
1.37 (1.16 to 1.61)‡
Q4 (reference): 73 to 260 nmol/L
N=4472 (24.2)		1

  • p<0.0001.

  • *Univariate model.

  • †Controlled for age, sex and race.

  • ‡Multivariate model controlled for age, sex, race and BMI.

  • BMI, body mass index; HbA1c, haemoglobin A1c; 25OHD, 25-hydroxyvitamin D.