Table 2.

Blood-feeding results of wild, pyrethroid-resistant Anopheles gambiae s.l. collected in experimental huts with pyrethroid-chlorfenapyr nets and pyrethroid-piperonyl butoxide nets applied alone and in combination in Covè, Benin

Trial component	Treatment	N*	N blood-fed	% Blood-feeding*	95% CIs	% Blood-feeding inhibition	% Personal protection
Trial 1*
Single nets	Untreated net	835ab	574	68.7a	65.6–71.8	–	–
	Interceptor	352c	136	38.6b	33.5–43.7	43.8	76.3
	DuraNet Plus	644de	111	17.2c	14.3–20.1	75.0	80.7
	Interceptor G2	309c	72	23.3d	18.6–28.0	66.1	87.5
Double net combinations	Untreated net + Untreated net	1423f	1101	77.4e	75.2–79.6	–	–
	Interceptor + Interceptor	659ad	337	51.1f	47.3–54.9	34.0	69.4
	DuraNet Plus + DuraNet Plus	836a	196	23.4d	20.5–26.3	69.8	82.2
	Interceptor G2 + Interceptor G2	495be	156	31.5b	27.4–35.6	59.3	85.8
	Interceptor G2 + Interceptor	569be	267	46.9f	42.8–51.0	39.4	75.7
	Interceptor G2 + DuraNet Plus	574be	124	21.6d	18.2–25.0	72.1	88.7
Trial 2*
Single nets	Untreated net	179vw	101	56.4w	49.1–63.7	–	–
	PermaNet 3.0	213vwy	49	23.0x	17.4–28.7	59.2	51.5
	Interceptor G2	195vw	81	41.5y	34.6–48.4	26.4	19.8
	PermaNet Dual	164w	69	42.1y	34.5–49.7	25.4	31.7
Double net combinations	Untreated net + Untreated net	466z	273	58.6z	54.1–63.1	–	–
	PermaNet 3.0 + PermaNet 3.0	289vwy	30	10.4x	6.9–13.9	82.3	89.0
	PermaNet Dual + PermaNet Dual	351xz	105	29.9y	25.1–34.7	49.0	61.5
	PermaNet Dual + PermaNet 3.0	281y	35	12.5x	8.6–16.4	78.7	87.2

^*Results are presented separately for trials involving alpha-cypermethrin-based nets (trial 1) and deltamethrin-based nets (trial 2)

^*For each trial, values in the same column do not differ at the 5% level (p > 0.05) according to logistic regression analysis