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. 2013 Oct 21;13:39. doi: 10.1186/1472-6874-13-39

Table 1.

Demographic characteristics of participants

Characteristics N %
Age (years)
 
 
 35–39
978
29.1
 40–44
841
25.1
 45–49
786
23.4
 50–55
751
22.4
BMI
 
 
 <18.5
120
3.6
 18.5–22.9
1534
45.7
 23–24.9
791
23.6
 ≥25
911
27.1
Education
 
 
 < High school
936
27.9
 High school
1561
46.5
 > High school
859
25.6
Average household income (US$/month)
 
 
 <1500
916
27.3
 1500–2500
1088
32.4
 2501–3500
625
18.6
 >3500
727
21.7
Regular exercise
 
 
 Yes
1514
45.1
 No
1842
54.9
Cigarette smoking
 
 
 Never
3075
91.6
 Ever
281
8.4
Alcohol consumption (g/day)
 
 
 0
983
29.3
 >0–5.0
1891
56.3
 >5.0 482 14.4