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Table 2 Seasonal pattern of first three exacerbations of IBD

From: Seasonal variations in onset and exacerbation of inflammatory bowel diseases in children

Type of IBD Number of exacerbations Season
Winter Spring Summer Fall Total p
n (%) n (%) n (%) n (%) n (%)
CD First 20 (25.3 %) 12 (27.8 %) 19 (24.1 %) 18 (22.8 %) 79 (100 %) 0.695
Second 9 (21.4 %) 12 (28.6 %) 17 (40.5 %) 4 (9.5 %) 42 (100 %) 0.103
Third 3 (12 %) 5 (20 %) 12 (48 %) 5 (20 %) 25 (100 %) 0.138
UC First 13 (20.3 %) 23 (35.9 %) 12 (18.8 %) 16 (25 %) 64 (100 %) 0.450
Second 10 (25 %) 9 (22.5 %) 14 (35 %) 7 (17.5 %) 40 (100 %) 0.614
Third 3 (13 %) 6 (26.1 %) 8 (34.8 %) 6 (26.1 %) 23 (100 %) 0.602
  1. IBD inflammatory bowel diseases, UC ulcerative colitis, CD Crohn’s disease