Supplementary Table 1: Age-adjusted prevalence and incidence of IBD
Age-adjusted prevalence (95% confidence interval, CI)
Year IBD CD UC IBDU
1985 0.54 (0.32-0.89) 0.05 (0.01-0.24) 0.49 (0.28-0.83) 0.00 (0.00- 0.18) 1990 2.91 (2.38-3.54) 0.74 (0.50-1.08) 2.17 (1.70-2.74) 0.00 (0.00-
0.16) 1995 7.44 (6.58-8.38) 1.97 (1.56-2.48) 5.46 (4.72-6.30) 0.00 (0.00-
0.14) 2000 14.94 (13.81-
16.16)
4.55 (3.93-5.25) 10.32 (9.38-11.34) 0.07 (0.01- 0.23) 2005 23.63 (22.28-
25.06)
7.62 (6.84-8.46) 15.90 (14.80- 17.07)
0.12 (0.04- 0.28) 2010 34.56 (32.97-
36.22)
13.08 (12.08- 14.17)
21.14 (19.93- 22.42)
0.34 (0.20- 0.56) 2014 43.99 (42.25-
45.80)
18.63 (17.44- 19.88)
24.51 (23.26- 25.81)
0.86 (0.63- 1.16) Age-adjusted incidence (95% confidence interval, CI)
1985 0.10 (0.06-0.16) 0.01 (0.00-0.05) 0.09 (0.05-0.15) 0.00 (0.00- 0.04) 1990 0.45 (0.36-0.57) 0.13 (0.09-0.20) 0.32 (0.24-0.42) 0.00 (0.00-
0.03) 1995 0.87 (0.74-1.02) 0.24 (0.18-0.32) 0.63 (0.52-0.76) 0.00 (0.00-
0.03) 2000 1.68 (1.51-1.87) 0.53 (0.43-0.64) 1.14 (1.00-1.30) 0.01 (0.00-
0.05) 2005 2.05 (1.87-2.25) 0.66 (0.55-0.78) 1.38 (1.24-1.54) 0.01 (0.00-
0.04) 2010 2.53 (2.34-2.75) 1.06 (0.93-1.21) 1.43 (1.28-1.58) 0.05 (0.02-
0.09) 2014 3.12 (2.88-3.38) 1.46 (1.29-1.65) 1.51 (1.35-1.69) 0.15 (0.10-
0.21)
Incidence = (incident cases/total Hong Kong population) per 100,000 persons Prevalence = The number of alive patients with IBD per 100,000 persons
IBD: inflammatory bowel disease; CD: Crohn’s disease; UC: ulcerative colitis; IBDU:
inflammatory bowel disease unclassified
