Table 3 Outdoor resting density using artificial pit shelter and incidence rate ratios in intervention and control groups of Anopheles arabiensis in Adami Tullu, Ethiopia
Mosquito collection method and study arms | Collection nights | Mean density (95% CI) | IRR (95% CI) | p-value |
|---|---|---|---|---|
a) Control arm is the reference group | ||||
Control | 224 | 0.18 (0.09–0.35) | ||
IRS | 224 | 0.14 (0.07–0.30) | 0.800 (0.294–2.177) | 0.662 |
LLIN | 224 | 0.43 (0.27–1.69) | 2.398 (1.051–5.479) | 0.038 |
IRS + LLIN | 224 | 0.04 (0.01–0.15) | 0.200 (0.042–0.954) | 0.044 |
b) IRS + LLIN arm is the reference group | ||||
IRS + LLIN | 168 | 0.04 (0.01–0.15) | ||
IRS | 168 | 0.14 (0.07–0.30) | 3.998 (0.813–19.668) | 0.088 |
LLIN | 168 | 0.43 (0.27–1.69) | 12.001 (2.707–53.196) | < 0.001 |