Table 1

 Clinical background of the patients

Ulcerative colitisCrohn’s diseaseControls
No. of patients182210
Male/female10/817/54/6
Mean (range) age (years)42 (17–71)32 (22–53)61 (52–74)
Mean (range) duration of disease (years)4 (0–15)3 (2–8)
Location of Crohn’s disease
    Ileitis7
    Colitis2
    Ileocolitis13
Behaviour of Crohn’s disease
    Non-stricturing, non-penetrating type2
    Stricturing type14
    Penetrating type6
Extent of ulcerative colitis
    Left sided colitis2
    Total colitis16
Medical treatment
    Sulfasalazine or mesalazine1812
    Corticosteroids187
    Azathioprine or 6-mercaptopurine04