Table 2.

Mortality of Anopheles gambiae s.l. following exposure to deltamethrin with and without pre-exposure to the synergist PBO (2013)

Village	Number tested deltamethrin	Number tested deltamethrin + PBO	% mortality deltamethrin (95% CI)	% mortality delta + PBO (95% CI)	P value
Deltamethrin LLIN distributed
Beko east	103	69	0 (0)	18 (10–30)	0.001
Dalabani	101	102	50 (40–61)	71 (61–79)	0.003
Berila	104	101	13 (7–20)	81 (72–88)	0.001
Dierila	102	103	57 (47–67)	76 (66–84)	0.004
Total	410	375	29 (24–33)	66 (61–71)	0.001
Deltamethrin + PBO LLIN distributed
Beko west	103	69	0 (0)	17 (10–30)	0.001
Farabacoura east	101	103	88 (80–94)	92 (85–97)	0.323
Kola Djakada	104	99	20 (13–29)	47 (37–58)	0.001
Tieblembougou	100	102	47 (37–57)	66 (56–75)	0.007
Total	408	373	38 (33–33)	60 (55–65)	0.001