CD Patients with Vitamin B12 deficiency n=45	CD Patients with normal Vitamin B12 levels n=112	P value
Age at diagnosis Median ( range)	13 years (8–16 )	12 years ( 3–16 )	n.s
Male : Female	1.8:1	2.1:1	n.s
Follow up period Median ( range)	4 years (1–14 )	4 Years ( 1-14)	n.s
Ileal involvement L1 and L3	36/45 (80%)	85/112 ( 76%)	n.s
Disease not in remission	21/45 (47%)	33/112 (30%)	<0.05
Patients on Azathioprine	21/45 (47%)	33/112 (30%)	n.s
Patients on Methotrexate	0/45	4/112	n.s
Patients on Anti TNF alfa treatment	Infliximab 20/45 (45%) Adalimumab 13/45 (29%)	Infliximab 54/112 (48%) Adalimumab 33/112 (29%)	n.s
Patients with Ileal resection	7/45 (16%)	16/112 (14%)	n.s