Table 2. Atopic Dermatitis in 3 to 6 years old children populated in the different communities.

Community	population	AD		Prevalence		P value*
			Male	Female	Total
1XT	1214	162	12.2%	14.5%	13.3%
2PH	1642	180	11.7%	10.2%	11.0%	>0.05
3CX	2309	214	9.4%	9.1%	9.3%	<0.05
4JJ	958	84	8.5%	9.0%	8.8%	<0.05
5BS	1503	96	7.4%	5.4%	6.4%	<0.05
6NX	987	49	4.8%	5.1%	5.0%	<0.05
7JS	990	47	4.6%	4.9%	4.7%	<0.05
8CB	833	38	5.1%	4.0%	4.6%	<0.05

The prevalence of AD ordered by the distance from the core urban to the rural communities surveyed in Shanghai.

^*P value refers to the prevalence of each community compared with the prevalence of 1XT.