Table 4.

Meta-analysis of incidence studies showing rate ratio of South Asians relative to Caucasians

Disease	Number of studies	Heterogeneity		Effect size
		I2	P value	RR (95%CI)	P value
Crohn’s disease	6	95%	< 0.001	0.78 (0.22, 2.78)	0.7
Ulcerative colitis	4	83%	0.001	1.39 (0.84, 2.32)	0.2