Higher vitamin D serum concentration increases health related quality of life in patients with inflammatory bowel diseases

Table 4 Effect of vitamin D supplementation on vitamin D levels and short inflammatory bowel diseases questionnaire in Crohn’s disease and ulcerative colitis patients

Characteristics(mean ± SE)	IBD		CD		UC
	No VD supplementation (n= 90)	VD supplementation (n= 26)	NO VD supplementation (n= 64)	VD supplementation (n= 16)	NO VD supplementation (n= 26)	VD supplementation (n= 10)
VD summer/autumn	30.2 ± 1.4	26.8 ± 2.7	30.3 ± 1.7	27.1 ± 3.4	29.8 ± 2.7	26.4 ± 4.3
sIBDQ summer/autumn	56.7 ± 1.1	54.4. ± 2.1	57.5 ± 1.3	56.5 ± 2.6	54.3 ± 2.3	50.6 ± 3.7
VD next winter/spring	24.0 ± 1.6	25.9 ± 2.5	22.8 ± 1.6	26.4 ± 3.2	27.0 ± 2.5	25.0 ± 4.1
sIBDQ next winter/spring	56.8 ± 1.2	50.2 ± 2.3a	58.6 ± 1.3	54.5 ± 2.5	53.0 ± 2.5	42.9 ± 4.2a
∆ VD (winter/spring-summer/autumn)	-6.2 ± 1.5	-1.0 ± 2.8	-7.5 ± 1.6	-0.7 ± 3.11	-2.8 ± 3.2	-1.4 ± 5.2

¹Not significant;

^aP < 0.05 vs control group. VD: Vitamin D; IBD: Inflammatory bowel diseases; CD: Crohn‘s disease; UC: Ulcerative colitis; sIBDQ: Short inflammatory bowel diseases questionnaire.