Table 1

Demographic characteristics of the study population
Characteristics (%) Male (n=4068) Female (n=4613) All (n=8681)
Age
 18-34 years 1078 (26.5) 1099 (23.8) 2177 (25.1)
 35-44 years 864 (21.2) 923 (20.0) 1787 (20.6)
 45-54 years 702 (17.3) 850 (18.4) 1552 (17.9)
 55-64 years 666 (16.4) 843 (18.3) 1509 (17.4)
 ≥65 years 758 (18.6) 898 (19.5) 1656 (19.1)
Tobacco cultivating
 Yes 1267 (31.1) 1176 (25.5) 2443 (28.1)
 No 2801 (68.9) 3437 (74.5) 6238 (71.9)
Ethnicity
 Han 3226 (79.3) 3516 (76.2) 6742 (77.7)
 Minorities 842 (20.7) 1097 (23.8) 1939 (22.3)
Level of education
 Primary (grade 1–6) or lower 3402 (83.6)* 4107 (89.0)* 7509 (86.5)
 Middle ((grade 7–9) or higher 666 (16.4) 506 (11.0) 1172 (13.5)
Level of yearly household income
 Low 856 (21.0) 1096 (23.8) 1952 (22.5)
 Medium 2285 (56.2) 2701 (58.6) 4986 (57.4)
 High 927 (22.8) 816 (17.7) 1743 (20.1)

* P<0.05 from chi-squared test for difference between sexes.

† Low income is < $150 USD; medium is $150-600 USD; and high income is >$600.

Cai et al.

Cai et al. BMC Public Health 2012 12:842   doi:10.1186/1471-2458-12-842

Open Data