House-Level Risk Factors for Aedes aegypti Infestation in the Urban Center of Castilla la Nueva, Meta State, Colombia
Table 3
Frequencies (n, %) of behavioral factors associated with identifying positive houses with immature stages of A. aegypti (PR, 95% CI; χ2) and factors associated with 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
Mobility outside the municipality
Yes
244 (79.5)
72
172
0.62 (0.45, 0.86)
6.61
189
55
0.94 (0.82, 1.08)
0.49
No
63 (20.5)
30
33
1.00
52
11
1.00
Frequency of mobility outside the municipality
Does not travel
61 (19.9)
29
32
1.00
9.66
50
11
1.00
6.03
Daily
8 (2.6)
3
5
0.79 (0.31, 2.00)
4
4
0.63 (0.31, 1.26)
Weekly
35 (11.4)
11
24
0.66 (0.38, 1.15)
29
6
1.06 (0.90, 1.25)
Every 15 days
44 (14.3)
17
27
0.81 (0.51, 1.28)
37
7
1.08 (0.94, 1.25)
Monthly
159 (51.8)
42
117
0.55 (0.38, 0.80)
121
38
0.94 (0.84, 1.05)
Concrete washbasins cleaning
Yes
254 (82.7)
84
170
0.97 (0.64, 1.47)
1.91e − 30
205
49
1.19 (0.98, 1.44)
3.52
No
53 (17.3)
18
35
1.00
36
17
1.00
Frequency of concrete washbasins cleaning
It has no tank
38 (12.4)
7
31
1.00
6.68
26
12
1.00
5.39
From 2 to 8 days
249 (81.1)
85
164
1.16 (0.75, 1.80)
200
49
1.88 (0.89, 4)
From 9 to 15 days
15 (4.9)
7
8
1.43 (0.81, 2.53)
10
5
0.92 (0.26, 3.3)
From 20 to 30 days
5 (1.6)
3
2
1.83 (0.88, 3.81)
5
0
3.E+04 (0, Inf)
Identify covered water containers
Yes
38 (12.4)
15
23
1.00
0.48
33
5
1.00
1.27
No
269 (87.6)
87
182
1.22 (0.79, 1.88)
208
61
0.89 (0.77, 1.02)
Reasons for water storage
Custom
29 (9.4)
7
22
0.71 (0.36, 1.37)
8.69
23
6
1.01 (0.83, 1.23)
1.25
Does not store water
47 (15.3)
8
39
1.00
34
13
1.00
Domestic use
231 (75.2)
87
144
1.91 (1.18, 3.09)
184
47
1.06 (0.92, 1.23)
Knowledge of the biological behavior of the vector
Yes
185 (60.3)
58
127
1.00
0.54
147
38
1.00
0.13
No
122 (39.7)
44
78
1.15 (0.74, 1.77)
94
28
0.97 (0.86, 1.09)
Knowledge of breeding sites
Yes
267 (87)
87
180
1.00
0.19
209
58
1.00
2.E − 03
No
40 (13)
15
25
1.85 (1.2, 2.8)
32
8
1.02 (0.86, 1.2)
Vector knowledge
Yes
290 (94.5)
92
198
0.54 (0.35, 0.83)
4.16
229
61
1.00
0.26
No
17 (5.5)
10
7
1.00
12
5
0.89 (0.65, 1.22)
Knowledge of arboviruses
Yes
283 (92.2)
90
193
1.00
2.53
222
61
1.00
5.3E − 30
No
24 (7.8)
12
12
1.57 (1.02, 2.43)
19
5
1.00 (0.81, 1.25)
Biting control strategy
Physical
229 (74.6)
78
151
1.11 (0.76, 1.62)
0.15
184
45
1.10 (0.95, 1.28)
1.42
Chemistry
78 (25.4)
24
54
1
57
21
1
Breeding site control strategies
Actions on the tank
234 (76.2)
81
153
1.20 (0.81, 1.80)
0.61
182
52
0.96 (0.84, 1.10)
0.15
Use of insecticides and chlorine
73 (23.8)
21
52
1
59
14
1
Spray the house with insecticides
Yes
237 (77.2)
69
168
1.00
7.12
189
48
1.00
0.66
No
70 (22.8)
33
37
1.61 (1.17, 2.22)
52
18
0.93 (0.80, 1.00)
Fumigation frequency
From 1 to 8 days
261 (85)
169
92
1.00
4.61
54
207
1.00
0.69
Every 15 days
11 (3.6)
7
4
0.95 (0.60, 1.49)
3
8
0.92 (0.64, 1,33)
Monthly
35 (11.4)
29
6
1.28 (1.07, 1.59)
9
26
0.94 (0.77, 1.15)
How do you spray insecticides?
Self-application
229 (74.6)
67
162
0.65 (0.47, 0.90)
7.98
183
46
1.07 (0.92, 1.25)
1.07
Contract fumigation
8 (2.6)
2
6
0.75 (0.22, 2.51)
6
2
1.00 (0.66, 1.54)
Do not spray
70 (22.8)
33
37
1.00
52
18
1.00
Bold number and asterisk represent statistical significance of < 0.05.
