Table 2. Basic clinical features in ulcerative colitis patients with and without vitamin K deficiency.

	Vitamin K deficiency
	Median [1st-3rd quartiles] or percentage
Variables	No	Yes	p-value
Number of patients	27 (56.3%)	21 (43.7%)
Age (years)	14.0 [12.0–16.0]	14.0 [13.0–16.0]	0.98
Body mass (Z-score)	−0.7 [−1.0– (−0.1)]	−1.3 [−1.4– (−0.2)]	0.07
Height (Z-score)	−0.7 [−1.1–0.1]	−0.9 [−1.7–0.6]	0.73
Disease duration (months)	24.0 [11.0–44.0]	19.0 [11.0–42.0]	0.79
Truelove-Witts score	2.0 [0.5–4.0]	4.0 [1.0–6.0]	0.26
C-reactive protein concentration relative to cutoff value	0.5 [0.1–1.4]	0.1 [0.1–0.8]	0.21
Hospitalizations	0.0 [0.0–1.0]	1.0 [0.0–1.0]	0.25
Exacerbations	0.0 [0.0–1.0]	1.0 [0.0–1.0]	0.19
Corticosteroid treatment	25.9%	14.3%	0.29 Fishers' exact test
Immunosuppressive treatment	25.9%	38.1%	0.37 χ2