Family history and disease outcomes in patients with Crohn’s disease: A comparison between China and the United States

Table 2 Prevalence and odds ratio of having family history of inflammatory bowel disease in China vs the United States

	China(n = 49)	United States(n = 145)	Unadjusted OR (95%CI) P value (Reference = US)	Adjusted1 OR (95% CI) P value (Reference = US)
Any family history of IBD (%)	4.1% (n = 2)	39.3%	0.07 (0.02-0.28)	0.08 (0.02-0.34)
			P = 0.0002	P = 0.0008
First-degree family history of IBD (%)	4.1% (n = 2)	23.5%	0.14 (0.03-0.60)	0.14 (0.03-0.65)
			P = 0.008	P = 0.01

¹Adjusted for the total number of siblings and children, and duration of disease at survey completion. IBD: Inflammatory bowel disease; OR: Odds ratio.