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Table 2 Protective efficacy of freestanding transfluthrin passive emanators (FTPEs) measured using human landing catch (HLC), mosquito-electrocuting traps (METs) and BG-Sentinel (BGS) traps evaluated individually in a no-choice test and in competition with HLC in a choice test in the presence of two FTPEs (treatment) and with no transfluthrin (control)

From: Semi-field evaluation of the exposure-free mosquito electrocuting trap and BG-Sentinel trap as an alternative to the human landing catch for measuring the efficacy of transfluthrin emanators against Aedes aegypti

Trap Combination Position 1 Position 2
% recapture Control (95% CI) % recapture Treatment (95% CI) %Protective efficacy (95% CI) OR (95% CI)a treatment relative to the control P-value % recapture Control (95% CI) % recapture Treatment (95% CI) Protective efficacy (95% CI) OR (95% CI)a treatment relative to the control P-value
No-choice           
HLC 71 (63–80) 24 (14–34) 66 (50–82) 0.12 (0.09–0.15)  < 0.0001      
MET 47 (41–52) 20 (18–23) 55 (48–63) 0.29 (0.24–0.37)  < 0.0001      
BGS 61 (53–68) 22 (17–27) 64 (54–73) 0.18 (0.15–0.23)  < 0.0001      
Choice           
HLC + HLC 42 (39–45) 26 (22–30) 37 (25–50) 0.49 (0.39–0.60)  < 0.0001 47 (43–51) 24 (14–34) 49 (30–68) 0.35 (0.28–0.43)  < 0.0001
MET + HLC 12 (7–17) 2 (1–4) 76 (61–92) 0.20 (0.13–0.33)  < 0.0001 48 (42–54) 26 (21–32) 44 (31–57) 0.38 (0.31–0.47)  < 0.0001
BGS + HLC 7 (4–9) 5 (0–10) 0 (0–100) 0.70 (0.45–1.08) 0.105 71 (65–76) 34 (26–41) 52 (40–64) 0.21 (0.17–0.26)  < 0.0001
  1. The percentage of released mosquitoes recaptured by each method is presented out of 800 Aedes aegypti mosquitoes released over eight replicates. The proportion recaptured is the arithmetic mean recaptured out of the total released
  2. aThe odds ratio (OR) estimates were derived from Stata output of treatment relative to control from mosquitoes recaptured in position 1 in the presence (choice) and absence (no-choice) of additional HLC conducted in position 2, adjusted for temperature and humidity and presented with a 95% confidence interval