Table 1 Study demographics of the patients with Crohn’s disease
Sample characteristicTrios
No of probands327
Study demographics
Male:female1.2:1.0
Median age at diagnosis (IQR)13.1 years (11.2 to 16)
Known Jewish ancestry20.5%
Known IBD in a first degree relative20.8%
Disease location
    L146%
    L219%
    L335%
Disease behaviour
    B166.0%
    B219.5%
    B314.5%

  • L1, ileal; L2, colonic; L3, ileocolonic; B1, non-stricturing, non-penetrating; B2, stricturing; B3, penetrating (Montreal Classification21).

  • IBD, inflammatory bowel disease; IQR, interquartile range.