Table 1.

Indoor host-seeking density using light trap catches and incidence rate ratios in intervention and control groups of Anopheles arabiensis in Adami Tullu, Ethiopia

Study arms	Person-night catch	Mean density (95% CI)	IRR (95% CI)	P value
a) Control arm is the reference group
Control	592	1.11 (0.89–1.38)
IRS	592	0.03 (0.01–0.08)	0.031 (0.012–0.076)	< 0.001
LLIN	592	0.09 (0.05–0.15)	0.096 (0.060–0.153)	< 0.001
IRS + LLIN	592	0.03 (0.01–0.08)	0.031 (0.012–0.076)	< 0.001
b) IRS + LLIN arm is the reference group
IRS + LLIN	444	0.03 (0.01–0.08)
IRS	444	0.03 (0.01–0.08)	1.424 (0.284–3.525)	1.000
LLIN	444	0.09 (0.05–0.15)	2.601 (0.903–7.478)	0.076

IRS indoor residual spray, LLIN long-lasting insecticidal nets, LTC light trap catch