Epidemiology of inflammatory bowel disease in racial and ethnic migrant groups

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.