Table 6.
Crohn’s disease location
| Study | Country (Region) | Time period | Number of cases | Disease location/ Behaviour, Montreal |
Population groups, % |
||
| AA | Caucasian (or other control) | Hispanic | |||||
| Cross (2006)[23] | United States (Baltimore) | 1997-2005 | 210 | L1 | 13.0 | 38.0 | - |
| L2 | 29.0 | 23.0 | - | ||||
| L3 | 56.0 | 36.0 | - | ||||
| Sofia (2014)[40] | United States (Chicago) | 2008-2013 | 1334 | L1 | 57.8 | 71.0 | - |
| L2 | 60.6 | 66.0 | - | ||||
| Nguyen (2006)[24] | United States (National) | 2003-2005 | 697 | L1 | 16.1 | 29.2 | 23.3 |
| L2 | 33.9 | 17.4 | 16.3 | ||||
| L3 | 22.6 | 36.7 | 52.3 | ||||
| L4 | 27.4 | 16.7 | 8.1 | ||||
| Eidelwein (2007)[25] | United States (Baltimore) | 1991-2000 | 137 (Paed) | L1 | 3.0 | 2.9 | - |
| L2 | 73.5 | 71.8 | - | ||||
| L3 | 23.5 | 25.2 | - | ||||
| Hatter (2012)[26] | United States (Texas) | 2004-2009 | 246 (Paed) | L1 | 4.3 | 4.7 | 4.8 |
| L2 | 7.1 | 4.8 | 10.5 | ||||
| L3 | 87.8 | 88.9 | 84.2 | ||||
| Ghazi (2013)[27] | United States (Baltimore) | 2004-2009 | 296 | L1 | 31.0 | 38.0 | - |
| L2 | 12.0 | 20.0 | - | ||||
| L3 | 55.0 | 42.0 | - | ||||
| Damas (2013)[28] | United States (Florida) | 1998- 2009 | 325 | L1 | - | 16 (NHW) | 24.4 |
| L2 | - | 24.0 | 25.6 | ||||
| L3 | - | 60.0 | 50.0 | ||||
| L4 | - | 12.5 | 3.9 | ||||
| Kugathasan (2003)[29] | United States (National) | 2000-2001 | 222 (Paed) | L1 | 10.0 | 19.0 | - |
| L2 | 34.0 | 28.0 | - | ||||
| L3 | 46.0 | 51.0 | - | ||||
| L4 | 32.0 | 42.0 | - | ||||
AA or Hispanics compared with Caucasians (3467 total cases). Bold font shows significant differences between AA and population group. Italic font illustrates significant difference between Hispanic and Caucasian groups. AA: African-Americans; NHW: Non-Hispanic white.