Retrospective Cohort Study
Copyright ©The Author(s) 2019.
World J Clin Cases. Jul 26, 2019; 7(14): 1795-1804
Published online Jul 26, 2019. doi: 10.12998/wjcc.v7.i14.1795
Table 1 Overall prevalence of anal fistula with and without Crohn’s disease
2014201520162017
Prevalence of AF, n1143938688579
Prevalence of AF, n/10000 patients2.342.221.931.82
Standardization to
UK (95%CI)2.31 (2.18-2.44)2.19 (2.05-2.33)1.89 (1.75-2.03)1.80 (1.65-1.94)
EU (95%CI)2.36 (2.22-2.50)2.23 (2.08-2.37)1.94 (1.79-2.08)1.83 (1.68-1.98)