N n (%) 95%CI
Age(M±SD)* 178 49.74 ± 17.06
Sex 178
Women 100(56.2) 48.8-63.5
Men 78(43.8) 36.5-51.2
Smoking status 172
Never-smoker 140(81.4) 75.5-87.3
Current smoker 19(11.0) 6.3-15.8
Former smoker 13(7.6) 3.6-11.5
Education 153
Primary school 17(11.1) 6.1-16.1
Middle school 19(12.4) 7.1-17.7
High school 34(22.2) 15.6-28.9
College 55(35.9) 28.3-43.6
Postgraduate and above 28(18.3) 12.1-24.5
Employment status 163
Current employment 88(54.0) 46.3-61.7
Retired 54(33.1) 25.8-40.4
Unemployed 5(3.1) 0.4-5.7
Other 16(9.8) 5.2-14.4
Medical insurance 169
No insurance 19(11.2) 6.4-16.1
URBMI/ UEBMI 92(54.4) 46.9-62.0
Free Medical Service 44(26.0) 19.4-32.7
Medical Insurance in Different Places 5(3.0) 0.4-5.5
NCMS 9(5.3) 1.9-8.7