Table 1.

Baseline characteristics

	All patients (n = 155)	CD (n = 81)	UC (n = 67)	IBD‐U (n = 7)
Sex (% male)	45	46	43	71
Age (median, years) [IQR]	38 [25–52]	34 [23–50]	38 [28–54]	57 [50–60]
Disease duration (median, years) [IQR]	5.9 [2.3–12]	7.8 [2.6–15]	4.6 [1.2–11]	4.9 [2.8–7.5]
Biologic therapy (%)	46	52	50	N/A †
Vitamin D supplementation (%)	25	13	13	N/A †

^† Data available only for one patient with IBD‐U.

CD, Crohn's disease; IBD‐U, inflammatory bowel disease unclassified; IQR, interquartile range; UC, ulcerative colitis.