Predictors of vitamin D deficiency in inflammatory bowel disease and health: A Mississippi perspective

Table 6 Results of multivariate modelling with age, race, gender, body mass index and diagnosis as predictors of deficient, insufficient and sufficient vitamin D

	Full model		Global	Reduced model		Global
	OR	OR	P value (full)	OR	OR	P value (reduced)
	(95%CI),	(95%CI),		(95%CI),	(95%CI),
	deficient vs sufficient	insufficient vs sufficient		deficient vs sufficient	insufficient vs sufficient
Diagnosis			0.1482			0.0852
Controls	Ref.	Ref.		Ref.	Ref.
CD	1.71	2.11		2.22	2.16
	(0.74, 3.94)	(0.95, 4.69)		(1.07, 4.63)	(1.07, 4.36)
UC	0.73	1.13		0.92	1.2
	(0.30, 1.76)	(0.50, 2.53)		(0.42, 2.02)	(0.59, 2.48)
Gender			0.9584
Female	Ref.	Ref.
Male	0.9	0.95
	(0.46, 1.79)	(0.50, 1.81)
Age (yr)			0.1578
< 35	3.62	1.47
	(1.18, 11.12)	(0.56, 3.83)
35-49	1.9	0.68
	(0.68, 5.30)	(0.28, 1.63)
50-64	2.61	0.86
	(1.04, 6.58)	(0.40, 1.86)
> 65	Ref.	Ref.
Race			0.00061			< 0.00011
AA	Ref.	Ref.		Ref.	Ref.
White	0.251	0.67		0.231	0.64
	(0.13, 0.48)	(0.34, 1.29)		(0.12, 0.43)	(0.33, 1.22)
Other	0.3	0.68		0.18	0.57
	(0.03, 3.38)	(0.09, 4.89)		(0.02, 1.95)	(0.08, 3.96)
BMI (kg/m2)			0.00171			0.00301
< 25	0.68	0.57		0.71	0.63
	(0.32, 1.43)	(0.28, 1.17)		(0.34, 1.48)	(0.31, 1.26)
25-30	Ref.	Ref.		Ref.	Ref.
> 30	2.711	2.361		2.611	2.271
	(1.28, 5.73)	(1.17, 4.75)		(1.26, 5.42)	(1.14, 4.52)

¹Statistically significant. CD: Crohn’s disease; AA: African American; BMI: Body mass index; UC: Ulcerative colitis.