Table 7.

Comparison of HIV prevalence rates among pregnant women between town and rural areas, Dehong Prefecture, Yunnan Province 2005^a

	Townb		Ruralc
City or county	No. of participants	HIV prevalence (%)	No. of participants	HIV prevalence (%)	P-valued
Ruili City	1973	1.5	797	2.3	0.2
Luxi City	3040	0.6	2505	0.6	1.0
Longchuan County	1176	0.6	1120	0.9	0.3
Yingjiang County	1089	1.1	1305	0.8	0.2
Lianghe County	1542	0.2	391	0.3	0.7

^aHIV infection determined by the enzyme immunoassay (Kinghawk HIV–1/2 antibody assay) and confirmed with western blot.

^bANC sentinel surveillance data from each town of the two cities and three counties.

^cCommunity-based surveys among the pregnant women for the rural areas of each city and county conducted in 2005, random sampling strategy was applied.

^dChi-square test was applied to compare the HIV prevalence between town and rural of each city and county.