Table 4.

Linkage disequilibrium

		1 All samples			Unique haplotypes			Reduction in I A S
Region	Year	N	I A S	P-value	N	I A S	P-value	Fold change
Anhui	2007-10	84	0.261	P < 0.001	41	0.092	P < 0.001	2.8
Jiangsu	2008-10	17	0.404	P < 0.001	11	0.209	P < 0.001	1.9
Central China	2008	43	0.230	P < 0.001	25	0.054	P < 0.001	4.3
	2009	34	0.273	P < 0.001	20	0.151	P < 0.001	1.8
	2010	19	0.322	P < 0.001	15	0.112	P < 0.001	2.9
Central China	2007-10	101	0.254	P < 0.001	46	0.093	P < 0.001	2.7

¹All samples with no missing data at 6 loci (excluding MS10).