Table 7.
Factors associated with loss of insecticide bio-efficacy
| Factors | Modalities | N ineffective | Total | % ineffective | OR | OR (95%CI) | P (Wald test) | P (LR-test) |
|---|---|---|---|---|---|---|---|---|
|
Frequency of LLIN use |
Often |
11 |
28 |
39.29 |
1.00 |
- |
- |
0.028 |
| |
Every night |
89 |
144 |
61.81 |
2.50 |
[1.09-5.73] |
0.031 |
|
|
Sleeping material |
Bed |
65 |
104 |
62.50 |
1.00 |
- |
- |
0.0117 |
| |
Mat |
35 |
68 |
51.47 |
0.64 |
[0.34-1.17] |
0.12 |
|
|
Washing frequency |
None |
31 |
53 |
58.49 |
1.00 |
- |
- |
0.728 |
| |
1 |
28 |
50 |
56.00 |
0.90 |
[0.41-1.97] |
0.431 |
|
| |
2-5 |
41 |
69 |
59.42 |
1.04 |
[0.50-2.15] |
0.751 |
|
|
Location of the Kitchen |
Outside |
86 |
151 |
56.95 |
1.00 |
- |
- |
0.451 |
| |
Inside |
14 |
021 |
66.67 |
1.51 |
[0.58-3.96] |
0.455 |
|
|
LLINs maintenance |
Good |
33 |
064 |
51.56 |
1.00 |
- |
- |
0.489 |
| |
Low |
67 |
108 |
62.04 |
1.54 |
[0.82-2.87] |
0.489 |
|
|
Distance to water for washing |
>5 km |
59 |
100 |
59.00 |
1.00 |
- |
- |
0.17 |
| <0.5 km | 41 | 072 | 56.94 | 0.92 | [0.5-1.7] | 0.174 |