Evaluation of human-baited double net trap and human-odour-baited CDC light trap for outdoor host-seeking malaria vector surveillance in Kenya and Ethiopia

Table 3 Estimates of a negative binomial regression for comparison of outdoor host-seeking anopheline density between different traps in Bulbul, southwestern Ethiopia

Site and species	Traps	Number collected	EMM (95% CI)	OR (95% CI)	p value
An. arabiensis	HBLT	55	1.12 (0.76–1.65)	0.23 (0.14–0.38)	< 0.001*
	HDNT	168	3.32 (2.40–4.59)	0.69 (0.44–1.07)	0.098
	Light trap	25	0.51 (0.31–0.83)	0.11 (0.06–0.19)	< 0.001*
	HLC	240	4.85 (3.56–6.63)	1.0^a
An. pharoensis	HBLT	78	1.47 (1.02–2.12)	0.20 (0.13–0.33)	< 0.001*
	HDNT	243	4.79 (3.51–6.55)	0.66 (0.43–1.02)	0.062
	Light trap	35	0.72 (0.46–1.12)	0.10 (0.06–0.17)	< 0.001*
	HLC	366	7.25 (5.35–9.81)	1.0^a
An. coustani	HBLT	52	1.01 (0.67–1.51)	0.15 (0.09–0.25)	< 0.001*
	HDNT	101	1.83 (1.29–2.61)	0.28 (0.17–0.44)	< 0.001*
	Light trap	26	0.48 (0.29–0.78)	0.07 (0.04–0.13)	< 0.001*
	HLC	362	6.62 (4.88–18.99)	1.0^a
Other anophelines^b	HBLT	2	0.04 (0.01–0.16)	0.35 (0.07–1.83)	0.213
	HDNT	3	0.06 (0.02–0.19)	0.52 (0.12–2.21)	0.372
	Light trap	0	0	NA	NA
	HLC	6	0.12 (0.04–0.27)	1.0^a
Total anophelines	HBLT	187	3.63 (2.63–5.00)	0.19 (0.12–0.29)	< 0.001*
	HDNT	515	10.02 (7.45–13.49)	0.53 (0.35–0.80)	0.003*
	Light trap	86	1.74 (1.21–2.48)	0.09 (0.06–0.15)	< 0.001*
	HLC	974	18.99 (14.20–25.40)	1.0^a

A total of 48 trap-nights were conducted for each trap in each study site
HBLT human-odour-baited CDC light trap, HDNT human-baited double net trap, HLC human landing catch, EMM estimated marginal mean density, OR odds ratio, CI confidence interval
* Statistically significant
^aReference value
^bOther anophelines include An. squamosus and An. funestus s.l.

ISSN: 1475-2875