Table 1

Demographic characteristics by exposure zone


High Zone (n = 410)
Medium Zone (n = 486)
Low Zone (n = 533)
Overall (n = 1429)

Age – Mean (years)
45
47
44
44
(95% CI)
(41 – 48)
(44 – 49)
(42 – 54)
(43 – 46)
Sex (Female%)
53.0%
46.6%
49.8%
49.3%
Home Ownership
63.5
66.7
58.7
61.1
(95% CI)
(55.2–71.8)
(59.7–73.7)
(53.3–64.1)
(57.0–65.1)
Highest Education Level Achieved
Year 10 (%)
26.2
31.0
22.9
25.2
(95%CI)
(19.3–33.1)
(24.4–37.7)
(18.4–27.3)
(21.7–28.7)
Completed high school (%)
24.9
21.5
23.2
22.9
(95%CI)
(17.3–32.5)
(15.2–27.8)
(18.4–28.1)
(19.3–26.5)
Technical qualification (%)
21.3
21.7
23.1
22.7
(95%CI)
(15.6–26.9)
(16.1–27.2)
(18.7–27.6)
(19.4–25.9)
University (%)
27.7
25.8
30.8
29.2
(95%CI)
(20.3–35.1)
(20.3–31.4)
(25.7–35.9)
(25.5–33.0)

CI = Confidence interval

Capon et al. Environmental Health 2008 7:46   doi:10.1186/1476-069X-7-46