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. 2013 Jul 16;12:57. doi: 10.1186/1476-069X-12-57

Table 2.

Characteristics of the population who provided a blood sample by area of residence

Variables
Area 1
Area 2
Area 3
Area 4
Total
  N (%) N (%) N (%) N (%) N (%)
TOTAL
30 (100)
52 (100)
47 (100)
117 (100)
246 (100)
Sex
Males
17 (56.7)
25 (48.1)
24 (51.1)
61 (52.1)
127 (51.6)
Females
13 (43.3)
27 (51.9)
23 (48.9)
56 (47.9)
119 (48.4)
Age group (years)
25-34
4 (13.3)
12 (23.1)
6 (12.8)
27 (23.1)
49 (19.9)
35-44
9 (30.0)
12 (23.1)
14 (29.8)
29 (24.8)
64 (26.0)
45-54
6 (20.0)
13 (25.0)
9 (19.1)
27 (23.1)
55 (22.4)
55-64
11 (36.7)
15 (28.8)
18 (38.3)
34 (29.1)
78 (31.7)
Level of education
Primary school
9 (30.0)
19 (36.5)
20 (42.5)
75 (61.5)
120 (48.8)
High school
18 (60.0)
30 (57.7)
21 (44.7)
39 (33.3)
108 (43.9)
University degree
3 (10.0)
3 (5.77)
6 (12.8)
6 (5.13)
18 (7.32)
Smoking
Never
14 (46.7)
23 (44.2)
19 (40.4)
78 (66.7)
134 (54.5)
Yes
16 (53.3)
29 (55.8)
28 (59.6)
39 (33.3)
112 (45.5)
Distance from the river
> 5 km
22 (73.3)
6 (11.5)
0 (0.0)
4 (3.4)
32 (13.0)
> 2–5 km
5 (16.7)
22 (42.3)
4 (8.5)
4 (3.4)
35 (14.2)
1-2 km
1 (3.3)
16 (30.8)
17 (36.2)
42 (35.9)
76 (30.9)
500 m-1 km
0 (0.0)
5 (9.6)
19 (40.4)
37 (31.6)
61 (24.8)
< 500 m
2 (6.7)
3 (5.8)
7 (14.9)
30 (25.6)
42 (17.1)
Use of well water*
No
29 (96.7)
46 (88.5)
45 (95.7)
31 (26.5)
151 (61.4)
For drinking
1 (3.3)
1 (1.9)
0 (0.0)
28 (23.9)
30 (12.2)
For cooking
0 (0.0)
6 (11.5)
2 (4.3)
69 (59.0)
77 (31.3)
For personal cleaning
0 (0.0)
5 (9.6)
0 (0.0)
81 (69.2)
86 (35.0)
Someone else’s well
1 (3.3)
0 (0.0)
0 (0.0)
3 (2.6)
4 (1.6)
Any use
1 (3.3)
6 (11.5)
2 (4.3)
86 (73.5)
95 (38.6)
Provenience of food
Commercial
11 (36.7)
16 (30.8)
24 (51.1)
14 (12.0)
65 (26.4)
Local
10 (33.3)
25 (48.1)
19 (40.4)
55 (47.0)
109 (44.3)
Own production 9 (30.0) 11 (21.2) 4 (8.5) 48 (41.0) 72 (29.3)

Area 1: reference; Area 2: Colleferro urban/rural; Area 3: industrial; Area 4: river.

* Responses are not mutually exclusive.