Table 6.

HBV Prevalence for Blood Donors Above and Below 35 Years Old

Blood Center	Donations	Below 35			Over 35			P-value	Total Prevalence
		Donations	Number of HBsAg confirmed positive	Prevalence	Donations	Number of HBsAg Confirmed Positive	Prevalence
Hefei	97,668	69,540	38	0.06%	28,128	87	0.31%	<0.001	0.13%
Dalian	77,395	54,018	16	0.03%	23,377	44	0.19%	<0.001	0.08%
Changzhi	32,817	12,671	11	0.09%	20,146	41	0.20%	0.01	0.17%
Kaifeng	59,938	27,428	12	0.04%	32,510	28	0.09%	0.045	0.07%
Mianyang	45,494	19,463	21	0.11%	26,031	68	0.26%	<0.001	0.20%
Fujian	83,554	50,383	55	0.11%	33,171	157	0.47%	<0.001	0.25%
Total	396,866	233,503	153	0.07%	163,363	625	0.38%	<0.001	0.20%