The association of vitamin D binding protein levels and genotypes with type 1 diabetes in the black South African population

Table 7 Logistic regression analysis of determinants of T1D disease status

Dependent variable	Independent variable	Odds ratio (95% CI)	p value
Patient/Control ^a	VDBP concentration (mg/mL)	6.58 (1.45–29.9)	0.015
Patient/Control ^a	Autumn^b	0.31 (0.19–0.53)	< 0.001
	Sex^c	1.15 (0.72–1.84)	0.566
	rs7041 genotype^d	0.96 (0.41–2.25)	0.928
	rs4588 genotype^e	0.71 (0.35–1.42)	0.332

For full model p < 0.001 (n = 310); variable coding: ^a patient = 1 and control = 0; ^bautumn = 1 and not autumn = 0;^cfemale = 1 and male = 0; ^dTT = 1 and not TT = 0; ^eCC = 1 and not CC = 0

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