Table 1 Patient characteristics and concomitant medication

Gender, n (%)

     Male

35 (48.6)

     Female

37 (51.4)

Age, years

     Mean (SD)

11.8 (4.86)

     Min, max

0, 18

     Median

13.5

     Interquartile range

8, 15.5

Previous oral iron use, n (%)

39 (54.2)

Medical history, n (%)

     Crohn’s disease

29 (40.3)

     Ulcerative colitis

22 (30.5)

     Celiac disease

4 (5.6)

     Gastroesophageal reflux disease

2 (2.8)

     Helicobacter pylori gastritis

2 (2.8)

     Oesophageal varices bleeding

2 (2.8)

     Chronic diarrhoea

1 (1.4)

     Hyper-IgM syndrome

1 (1.4)

     Intestinal vascular malformation

1 (1.4)

     Ulcus ventriculi

1 (1.4)

     Others

7 (9.7)

Concomitant medication, n (%)

     Any medication

69 (95.8)

     Prednisolone

30 (41.7)

     Azathioprine

29 (40.3)

     Mesalazine

34 (47.2)

     Omeprazole

31 (43.1)

     Ferrous glycine sulphate

15 (20.8)

     Metronidazole

10 (13.9)

     Infliximab

9 (12.5)

     Escherichia coli Nissle 1917

9 (12.5)

     Cyclosporine

5 (6.9)