House-Level Risk Factors for Aedes aegypti Infestation in the Urban Center of Castilla la Nueva, Meta State, Colombia
Table 2
Frequencies (n, %) of environmental factors associated with identifying positive houses with immature stages of A. aegypti (PR, 95% CI; χ2) and in the presence of positive ovitraps (PR, 95% CI; χ2).
Variables
n (%)
Positive houses
Positive ovitraps
Yes
No
PR (95% CI)
χ2
Yes
No
PR (95% CI)
χ2
Housing type
House
236 (76.9)
90
146
2.26 (1.31, 3.87)
10.2
189
47
1.09 (0.94, 1.28)
1.14
Apartment
71 (23.1)
12
59
1.00
52
19
1.00
Wall type
Cement
289 (94.1)
97
192
1.00
2.04
226
63
1.00
5.63
Plastic fiber
1 (0.3)
0
1
0
1
0
1.28 (1.20, 1.35)
Wood
14 (4.6)
5
9
1.08 (0.52, 2.22)
13
1
1.19 (1.02, 1.40)
Zinc sheet
3 (1)
0
3
0
1
2
0.42 (0.09, 2.09)
Floor type
Tile
276 (89.9)
93
183
1.00
2.54
215
61
1.00
7.39
Cement
26 (8.5)
9
17
1.05 (0.60, 1.82)
24
2
1.18 (1.04, 1.34)
Land
5 (1.6)
0
5
0
2
3
0.51 (0.17, 1.48)
Roof type
Eternit roof tile
289 (94.1)
97
192
1.2 (0.56, 2.59)
0.06
226
63
0.94 (0.76, 1.16)
0.05
Zinc tile
18 (5.9)
5
13
1.00
15
3
1.00
Concrete washbasins (water tanks or low tank)
Yes
269 (87.6)
95
174
1.92 (0.96, 3.82)
3.56
215
54
1.17 (0.93, 1.46)
1.97
No
38 (12.4)
7
31
1.00
26
12
1.00
Other types of water container
Yes
113 (36.8)
33
80
0.82 (0.58, 1.16)
1.03
85
28
0.94 (0.82, 1.06)
0.85
No
194 (63.2)
69
125
1.00
156
38
1.00
More than one water container
Yes
75 (24.4)
26
49
1.06 (0.70, 1.61)
0.09
59
16
1.01 (0.62, 1.63)
0.001
No
232 (75.6)
76
156
1.00
182
50
1.00
House maintenance
Well maintained
264 (86)
84
180
1.00
2.70
200
64
1.00
8.43
Moderately maintained
25 (8.1)
12
13
1.50 (0.97, 2.34)
24
1
1.25 (1.13, 1.38)
Poor maintained
18 (5.9)
6
12
1.00 (0.51, 1.97)
17
1
1.22 (1.07, 1.39)
Patio (backyard) condition
Tidy
123 (40.1)
39
84
1.00
0.22
63
60
1.00
90.5
Moderately tidy
109 (35.5)
37
72
1.03 (0.74, 1.44)
105
4
1.40 (1.27, 1.55)
Untidy
75 (24.4)
26
49
1.06 (0.74, 1.52)
73
2
1.34 (1.23, 1.47)
Shadow in the patio
<25%
20 (6.5)
9
11
1.00
1.68
1
19
1.00
68.7
25–50%
83 (27)
29
54
1.07 (0.76, 1.52)
68
15
1.06 (0.94, 1.20)
>50%
204 (66.4)
64
140
0.85 (0.62, 1.18)
172
32
1.26 (1.09, 1.46)
Bold number and asterisk represent statistical significance of < 0.05.