Authors/paper/year [Reference] Country Number of IBD patients enrolled Patients age Time period of the study IBD incidence
Benchimol et al., Gut 2009 [2 ] Canada (Ontario) Population-based clinical database Paediatric (<15 yrs) 17 yrs (1991–2008) Age- and sex-standardized prevalence 42.1/100,000 (in 1994) 56.3/100,000 (in 2005) incidence 9.5/100,000 (in 1994) 11.4/100,000 (in 2005). Chouraki et al., Aliment. Pharmacol. Ther. 2011 [3 ] Northern France (EPIMAD Registry) 12.084 CD 7428 UC 4656 Paediatric 20 yrs (1988–2007) CD In 1988–1990: 5.2/100,000 In 2006-2007: 6.7/100,000
Jussila et al., J. Crohn’s Colitis 2013 [4 ] Finland Patients with special reimbursement of medications for IBD in the years 1993 (
= 10,958) and 2008 (31,703) Paediatric and adult 14 yrs (1998–2002) Nationwide point prevalence of IBD 216/100,000 in 1993 and 595/100,000 in 2008.
Burisch et al., Gut 2013. [5 ] Europe (31 centers from 14 Western and 8 Eastern European countries) 1515 patients 535 (35%) CD 813 (54%) UC 167 (11%) IBD-U Adult (≥15 yrs) — Overall incidence rate ratios in all Western European centres were 1.9 (95% CI 1.5 to 2.4) for CD and 2.1 (95% CI 1.8 to 2.6) for UC compared with Eastern European centres Median crude annual incidence rates per 100,000 in 2010: CD 6.5 (range 0–10.7) in Western European centres 3.1 (range 0.4–11.5) in Eastern European centres UC 10.8 (range 2.9–31.5) in Western European centres and 4.1 (range 2.4–10.3) in Eastern European centres IBDU 1.9 (range 0–39.4) in Western European centres and 0 (range 0–1.2) in Eastern European centres Malmborg et al., J. Pediatr. Gastroenterol. Nutr. 2013 [6 ] Sweden (Stockholm county) 133 Paediatric (<16 yrs at onset) 6 yrs (2002–2007) IBD 12.8/100,000 (95% CI 10.8–15.2) CD 9.2 (95% CI 7.5–11.2) UC 2.8 (95% CI 1.9–4.0) Turunen et al., Inflamm. Bowel Dis. 2006 [7 ] Finland 604 CD 203 (34%) UC 317 (52%) IBD-U 83 (14%) Paediatric (<18 yrs at onset) 12 to <15 yrs: 200 (33%) <3 yrs: 5.1% <6 yrs: 14% 17 yrs (1987–2003)
IBD In 1987: 3.9/100,000 (95% CI 2.5–5.8) In 2003: 7.0/100,000 (CI 5.0–9.4) (
)
Sawczenko and Sandhu, Arch. Dis Child 2003 [8 ] Great Britain and Ireland 739 CD 431 UC 211 IBD-U 86 Paediatric (<16 yrs at onset) 13 mths (June 1998–June 1999) — Armitage et al., Gastroenterology 2004. [9 ] Scotland 580 Paediatric (<16 yrs at onset) 15 yrs (1981–1995) CD 2.3 (95% CI: 2.0–2.5) (Northern Scotland 3.1, 95% CI: 2.6–3.8; Southern Scotland 2.1 95% CI: 1.9–2.4,
) Pozler et al., J. Pediatr. Gastroenterol. Nutr. 2006 [10 ] Czech Republic 470 CD 223 Paediatric (<15 yrs at onset) 12 yrs (1990–2001) CD In 1990: 0.25/100,000, in 2001: 1.25/100,000 Castro et al., Inflamm Bowel Dis 2008. [11 ] Italy 1576 UC 810 CD 635 IBD-U 131 Paediatric (<18 yrs) 8 yrs (1996–2003) IBD incidence: 0.39/100,000 (1996)–0.89/100,000 (2003) Rocchi et al., Can. J. Gastroenterol. 2012 [12 ] Canada 233,000 CD 129,000 UC 104,000 (5900 children with IBD) Paediatric and adult (<18 yrs at onset) 12 yrs (1998–2009) IBD Prevalence 0.67% Incidence: 10,200 cases/yr Zeng et al., J. Gastroenterol. Hepatol. 2013 [13 ] China (Guangdong province) 48 CD 17 UC 31 Paediatric and adult 1 yr (2011-2012) IBD 3.14/100,000 CD 1.09/100,000 UC 2.05/100,000 Kugathasan et al., J. Paediatr. 2003 [14 ] Winsconsin, US — Paediatric 2 yrs IBD 7.05/100,000 CD 4.56/100,000, UC 2.14/100,000
Basu et al., Am J. Gastroenterol. 2005 [15 ] Houston, Texas, US 148 Whites 40%, African Americans 37%, Mexican Americans 20%, Asians 3% Paediatric and adult 4 yrs (June 1999–November 2003) — Tozun et al., J. Clin. Gastroenterol 2009. [16 ] Turkey 877 CD 216 UC 661 Paediatric and adult 3 yrs (2001–2003) CD 2.2/100,000 UC 4.4/100,000 Abdul-Baki et al. Inflamm Bowel Dis 2007 [17 ] Lebanon 251 UC 142 CD 100 IBD-U 9 Paediatric and adult 5 yrs (2000–2004) CD 1.4/100,000 UC 4.1/100,000 (range, 0–6.9/100,000 for both) El Mouzan et al., J. Trop. Pediatr. 2006 [18 ] Saudi Arabia (Riyadh region) 50 CD 38% UC 48% IBD-U 16% Paediatric (<18 yrs at onset) <12 yrs: 16% 10 yrs (1993–2002) 0.5 cases/100,000
Tsai et al., J. Formos. Med. Assoc. 2004 [19 ] Taiwan 17 CD 9 (53%) UC 6 (35%) IBD-U 2 (12%) Paediatric (<18 yrs at onset) 22 yrs (1979–2000) CD From 1979 to 1995: 0.85% From 1996 to 2000: 2.6% (
), UC From 1979 to 1995: 0.85% From 1996 to 2000: 0.99% (
) Ng et al., Gastroenterology 2013 [20 ] Asia-Pacific (8 countries between Asia and Australia) 419 CD 166 UC 232 IBD-U 21 Paediatric and adult 1 yr (2011-2012)
Asia IBD 1.37/100,000 (95% CI: 1.25–1.51) CD 0.54 UC 0.76 IBD-U 0.07 China 3.44 per 100,000 individuals Australia IBD 23.67/100,000 (95% CI: 18.46–29.85) CD 14 UC 7.33 IBD-U 2.33
Pinsk et al., Am. J. Gastroenterol. 2007. [21 ] South Asian population in British Columbia, Canada 75 CD 48% UC 33.3% IBD-U 18.7% Paediatric (<16 yrs) 21 yrs (1985–2005) In 1996–2001: IBD 15.19/100,000 CD 6.41/100,000, UC 6.70/100,000 IBD-U 2.08/100,000