Participants with a confirmed diagnosis of CD, were said to have remission when Harvey-Bradshaw index (HBI) score was less than (<) 5. HBI measures 5 parameters; the general well-being (0= very well to 4= terrible), abdominal pain (0= none to 3= severe), number of liquid stools per day (0 to no maximum score), presence of an abdominal mass on physical exam (0= none to 3= definite and tender), and whether there are any complications (0= no complications, 1= arthralgia, 2= uveitis, 3= erythema nodosum, 4= aphthous ulcer, 5= pyoderma gangrenosum, 6= anal fissure, 7= new fistula, 8= abscess). The total HBI score: sum of all the 5 individual parameters, the minimum score is 0 and there was no pre-specified maximum score as it depended on the number of liquids stools. Higher HBI scores = greater disease activity.