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Table 3 Comparison of nightly outdoor biting per person between houses with or without transfluthrin-treated chairs or ribbons (dry season)

From: Creating mosquito-free outdoor spaces using transfluthrin-treated chairs and ribbons

Settings Species Treatment Nights n Adjusted-mean (95% CI) RR (95% CI) PP (95% CI) P-value
Outdoor peri-domestic space Anopheles arabiensis Control 32 1056 15.05 (12.29–18.44) 1 0  
Two TF-chairs 32 273 3.61 (2.87–4.55) 0.24 (0.19–0.29) 0.76 (071–0.80) < 0.001
TF-treated ribbon 32 211 2.96 (2.33–3.75) 0.19 (0.16–0.24) 0.81 (0.75–0.84) < 0.001
Control 28 910 14.86 (12.07–18.30) 1 0  
One TF-treated chair 28 290 4.54 (3.60–5.73) 0.30 (0.25–0.37) 0.70 (0.62–0.75) < 0.001
Culex spp. Control 32 889 10.52 (7.98–13.86) 1 0  
Two TF-chairs 32 426 5.12 (3.84–6.83) 0.48 (0.37–0.63) 0.52 (0.36–0.63) < 0.001
TF-treated ribbon 32 299 3.43 (2.55–4.61) 0.32 (0.24–0.43) 0.68 (0.57–0.75) < 0.001
Control 28 744 9.99 (7.43–13.44) 1 0  
One TF-treated chair 28 335 4.20 (3.07–5.75) 0.42 (0.31–0.56) 0.58 (0.43–0.68) < 0.001
Inside outdoor kitchen enclosure Anopheles arabiensis Control 25 152 1.17 (0.56–2.44) 1   
TF-sisal ribbon 25 113 0.56 (0.26–1.22) 0.57 (0.32–1.03) 0.43 (− 0.03 to 0.67) 0.065
Culex spp. Control 25 288 2.37 (1.35–4.17) 1 0  
TF-sisal ribbon 25 89 0.56 (0.29–1.06) 0.23 (0.12–0.43) 0.77 (0.56–0.87) < 0.001
  1. n total number of mosquito collected, CI confidence interval, PP percentage protection, RR relative rate, TF transfluthrin, 1 and 0 references