Comparison of PIBD incidence data with other incidence studies (rates per 100 000/year)
| Years studied | PIBD | CD | UC | IBDU | |
|---|---|---|---|---|---|
| Wessex, Southern England | 2002–2007 | 6.39 | 3.80 | 2.01 | 0.58 |
| 2008–2013 | 9.37 | 5.85 | 2.67 | 0.85 | |
| Scotland5 | 1990–1995 | 4.45 | 2.86 | 1.59 | – |
| 2003–2008 | 7.82 | 4.75 | 2.06 | – | |
| Ireland6 | 2000–2001 | 2.5 | – | – | – |
| 2008 | 7.3 | – | – | – | |
| BPSU14 | |||||
| England | 1998–1999 | 5.2 | 3.1 | 1.4 | 0.7 |
| Scotland | 1998–1999 | 6.5 | 4.2 | 1.8 | 0.6 |
| Wales | 1998–1999 | 5.2 | 3.2 | 1.7 | 0.3 |
| Northern Ireland | 1998–1999 | 3.6 | 2.4 | 1.0 | 0.2 |
| Republic of Ireland | 1998–1999 | 4.4 | 2.3 | 2.0 | – |
| Northern France23 | 1988–1999 | 3.1 | 2.3 | 0.8 | 0.12 |
| South-Eastern Norway16 | 2007–2009 | 10.6 | 6.7 | 3.3 | – |
| Stockholm county, Sweden7 24 | 1990–1995 | 4.7 | 2.5 | 2.4 | – |
| 1996–1999 | 8.6 | 6.9 | 1.9 | – | |
| 2002–2007 | 12.8 | 9.2 | 2.8 | – | |
| Ontario, Canada8 | 2005 | 11.4 | 6.0 | 4.1 | – |
BPSU, British Paediatric Surveillance Unit; CD, Crohn's disease; IBDU, inflammatory bowel disease unclassified; PIBD, paediatric inflammatory bowel disease; UC, ulcerative colitis.