Table 3.

Effect of PBO exposure on the susceptibility of Anopheles arabiensis populations from Almadies, Pikine and Yarakh: interaction between site, PBO and insecticide

	LR χ2	Df	Pr (>χ2)	Significance
Insecticide	12.344	2	0.002087	**
Site	40.166	2	1.897e−09	***
PBO	102.936	1	<2e−16	***
Insecticide–site	11.603	4	0.020563	*
Insecticide–PBO	0.665	2	0.717253
Site–PBO	43.937	2	2.879e−10	***
Insecticide–site–PBO	1.940	4	0.746827

*** p value < 0.001; ** p value (0.001–0.01); * p value (0.01–0.05)