highly significantP < 0.001
In CD patients with isolated involvement of the ileum (Montreal L1, ±L4), no significant correlation was found between FC (±3d) concentrations and SIBDQ scores (n = 27, r S = −0.268, P = 0.18), whereas that correlation was highly significant among patients with colonic or ileocolonic disease (Montreal L2 or L3, ±L4) (n = 59, r S = −0.470, P < 0.001).