High prevalence of vitamin A deficiency in Crohn's disease patients according to serum retinol levels and the relative dose-response test

Table 4 Body composition parameters, vitamin A intake, disease duration and clinical characteristics of interest in Crohn's disease patients, according to serum retinol level

Parameters	< 1.05 μmol/L(n = 11)	≥1.05 μmol/L(n = 27)	P value
BMI (kg/m2)	21.69 ± 2.74	25.65 ± 5.48	0.029
Weight (kg)	58.75 ± 9.46	68.96 + 15.59	0.051
Body fat (%)	26.13 ± 10.32	33.27 ± 11.68	0.131
LM (kg)	38.66 ± 8.35	43.04 ± 10.03	0.272
BMC (kg)	2.21 ± 0.55	2.44 ± 0.50	0.273
Body fat (kg)	13.22 ± 5.43	22.53 ± 11.28	0.032
Vitamin A intake (μg/d)	1125.7	1163.9	0.561
Disease duration (yr)	6.73 ± 7.89	2.41 ± 2.94	0.164
Bowel resection	7 (63)	13 (48)	0.386
Ileal resection	2 (18)	3 (11)	0.956
Ileal involvement	10 (90)	20 (74)	0.430
Active disease (HB index)	3 (27)	1 (4)	0.330
High CRP levels	2 (18)	9 (33)	0.430
Low HB levels	1 (9)	5 (18)	0.345

Data are represented as mean ± SD, median or n (%). BMI: Body mass index; LM: Lean body mass; BMC: Bone mineral content.