Table 4 Indoor human biting rates based on light trap catches and a conversion factor and incidence rate ratios in intervention and control groups of Anopheles arabiensis in the Adami Tullu, Ethiopia
Mosquito collection method and study arms | Collection nights | Mean density (95% CI) | IRR (95% CI) | p-value |
|---|---|---|---|---|
a) Control is the reference group | ||||
Control | 592 | 3.15 (2.62–3.79) | ||
IRS | 592 | 0.09 (0.05–0.15) | 0.028 (0.015–0.051) | < 0.001 |
LLIN | 592 | 0.26 (0.19–0.37) | 0.084 (0.056–0.125) | < 0.001 |
IRS + LLIN | 592 | 0.10 (0.06–0.17) | 0.032 (0.018–0.056) | < 0.001 |
b) IRS + LLIN is the reference group | ||||
IRS + LLIN | 444 | 0.10 (0.06–0.17) | ||
IRS | 444 | 0.09 (0.05–0.15) | 0.867 (0.398–1.885) | 0.718 |
LLIN | 444 | 0.26 (0.19–0.37) | 2.601 (1.374–4.918) | 0.003 |