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. 2013 Nov 5;12:95. doi: 10.1186/1476-069X-12-95

Table 1.

Sample characteristics (N = 2340)

Variables
 
Total
Urban
Rural
P value*
 
% (n)
% (n)
% (n)
 
Sex
Female
52.1 (1217)
53.2 (917)
48.9 (300)
0.14
Age
9 years
2.8 (64)
3.2 (55)
1.5 (9)
< 0.05
 
10 years
40.1 (933)
44.8 (767)
27.1 (166)
 
11 years
41.9 (975)
39.3 (672)
49.4 (303)
 
12 years
11.2 (260)
9.6 (165)
15.5 (95)
 
13 years
3.2 (74)
2.2 (38)
5.9 (36)
 
14 years
0.6 (14)
0.6 (11)
0.5 (3)
 
15 years
0.2 (5)
0.2 (4)
0.2 (1)
Environmental factors
 
 
 
 
 
Current exposure to dog
 
86.2 (2003)
86.4 (1478)
85.8 (525)
0.75
Current exposure to cat
 
59.2 (1375)
58.1 (994)
62.4 (381)
0.09
Current exposure to farm animals
 
36.1 (837)
31.6 (539)
48.9 (298)
< 0.05
Intense truck traffic 1
 
28.6 (655)
29.4 (494)
26.5 (161)
0.32
Environmental tobacco smoke exposure
 
37.1 (868)
31.7 (547)
52.4 (321)
< 0.05
Cooking fuel
Wood or coal
18.5 (431)
9.7 (167)
43.1 (264)
< 0.05
Disease vectors presence at home 2 (Median 2; Range 0 to 6)
None
8.4 (197)
9.0 (155)
6.9 (42)
< 0.05
 
1 Vector
39.3 (920)
41.8 (722)
32.3 (198)
 
2 Vectors
23.9 (559)
24.6 (424)
22.0 (135)
 
3 Vectors
16.5 (385)
16.3 (282)
16.8 (103)
 
≥ 4 Vectors
12.0 (279)
8.3 (144)
22.0 (135)
Precarious household conditions 3
None
70.6 (1615)
77.8 (1310)
50.5 (305)
< 0.05
 
1
21.2 (484)
17.0 (286)
32.8 (198)
 
≥ 2
8.2 (188)
5.2 (87)
16.7 (101)
Number of item ownership 4 (Median 4; Range 0 to 7)
None
0.6 (13)
0.6 (11)
0.3 (2)
< 0.05
 
1 item
6.4 (149)
4.7 (82)
10.9 (67)
 
2 items
7.4 (173)
5.5 (95)
12.7 (78)
 
3 items
16.4 (383)
15.3 (264)
19.4 (119)
 
4 items
22.3 (522)
22.1 (382)
22.8 (140)
 
5 items
22.3 (521)
23.6 (408)
18.4 (113)
 
≥ 6 items
24.8 (579)
28.1 (485)
15.3 (94)
Symptoms
 
 
 
 
 
Current asthma symptoms WQ 5
 
17.8 (414)
16.4 (281)
21.7 (133)
0.11
Current asthma symptoms VQ 6
 
6.4 (148)
7.3 (124)
3.9 (24)
0.23
Current rhinoconjunctivitis symptoms 7
 
22.2 (516)
21.5 (369)
24.0 (147)
0.54
Current eczema symptoms 8   9.2 (213) 9.5 (161) 8.5 (52) 0.59

*Chi square Test.

1Intense truck traffic: Almost the whole day.

2Disease vectors: fleas, ticks, kissing bugs, mice, bedbugs, flies.

3Precarious floor: soil; Precarious walls: cane, palm or trunk; Precarious source of water for cooking: river, lake, pump or water tank car; Precarious sewage system: to the surface or to a septic tank.

4Item ownership: Radio, TV, bicycle, motorbike, car, refrigerator, telephone.

5Positive answer to the question: “Have you had wheezing or whistling in the chest during the last 12 months?”in the written questionnaire.

6Positive answer to the first scene of the video questionnaire: Moderate wheezing at rest.

7Presence of sneezing or a runny or blocked nose, accompanied by itchy watery eyes without a cold or the flu.

8Presence of an itchy rash at any time in the past 12 months affecting the following places: the folds of the elbows; behind the knees; in front of the ankles; under the buttocks; or around the neck, ears, or eyes).