Table 2.
Influence of sampling method on the proportion of fed An. quadriannulatus and An. funestus which were captureda
| Sampling method | Percentage (Proportion fed) | ORb [95% C.I] | P value |
|---|---|---|---|
|
Anopheles quadriannulatus |
|
|
|
| HLC indoor |
24.4 (99/405) |
1.00c |
NAd |
| HLC outdoor |
29.3 (71/242) |
1.900 [1.253, 2.881] |
0.003 |
| CDC light trap |
12.9 (101/784) |
0.417 [0.292, 0.596] |
< 0.001 |
| Ifakara tent trap – C |
28.6 (6/21) |
1.251 [0.430, 3.642] |
0.682 |
| Window exit traps |
(0/1) |
NEe |
NEe |
| Resting boxes indoor |
(0/0) |
NEe |
NEe |
| Resting boxes outdoor |
100 (2/2) |
NEe |
NEe |
|
Anopheles funestus |
|
|
|
| HLC indoor |
34.8 (608/1749) |
1.00c |
NAd |
| HLC outdoor |
37.2 (608/1635) |
1.188 [1.017, 1.387] |
0.030 |
| CDC light trap |
20.6 (541/2630) |
0.543 [0.467, 0.633] |
< 0.001 |
| Ifakara tent trap – C |
14.1 (199/1410) |
0.261 [0.215, 0.317] |
< 0.001 |
| Window exit trap |
38.0 (27/71) |
1.086 [0.643, 1.835] |
0.758 |
| Resting boxes indoor |
73.7 (28/38) |
4.486 [2.059, 9.776] |
< 0.001 |
| Resting boxes outdoor | 72.7 (80/110) | 5.899 [3.688, 9.434] | < 0.001 |
a As described in the methods section, village, season and treatment were all included as fixed effects, while household and date were included as random effects. The proportions of fed An. quadriannulatus and An. funestus were not affected by village, season and treatment (P > 0.05).
b Odds Ratio represents the relative probability of sampled mosquitoes which had fed compared to the reference indoor HLC method.
c Reference method.
d Not applicable.
e Not estimable due to small or no numbers observed or no mosquito catches.