Table 1

Demographic profile of the study subjects
Characteristic Urban residents Rural residents Pvalue
Number % Number %
Gender 0.150
 Male 936 47.1 950 49.4
 Female 1053 52.9 973 50.6
Ethnicity 0.002
 Han 1647 82.6 1516 78.7
 Minorities 346 17.4 413 21.3
Age (years) 0.134
 15–20 138 6.9 148 7.8
 21–50 1372 68.5 1241 65.6
 51–69 492 24.6 504 26.6
Marital status <0.001
 Single 415 21.1 284 14.7
 Married or cohabitating 1461 74.2 1612 83.4
 Divorced or widowed 92 4.7 36 1.9
Education level <0.001
 Primary school and lower 187 9.4 892 46.1
 Middle School 571 28.8 882 45.5
 High school and more 1226 61.8 163 8.4
Employment <0.001
Unemployed 186 9.4 268 13.8
Employed 1785 90.6 1668 86.2
Length of time lived in city <0.001
< 2 years 317 16.1 142 7.4
≥ 2 years 1654 83.9 1777 92.6
Household per capita income (CYN/month) 0.756
Low income level (<1000) 1283 65.6 1266 66.8
Medium income level (1000–2000) 451 23.1 429 22.6
High income level (≥2000) 221 11.3 201 10.6

Primary school and lower: illiterate or semi-illiterate and elementary school;

Middle school: middle school;

High school and more: high school, technical school, 3-Year college, undergraduate and above.

Yuan et al.

Yuan et al. BMC Infectious Diseases 2012 12:256   doi:10.1186/1471-2334-12-256

Open Data