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Table 2 Efficacy of 2 repellents tested 3 to 6 hours after application during study B in Peru.

From: A low-cost repellent for malaria vectors in the Americas: results of two field trials in Guatemala and Peru

   All mosquitoes Hours post application Anopheles darlingi Hours post application
Treatment   3 4 5 6 Mean 95 % C.I. 3 4 5 6 Mean 95 % C.I.
20 % oil control AM 44.44 62.11 38.44 40.11 46.28 27.97 – 46.58 31.11 54.78 34.11 35.44 38.86 20.05 – 37.64
  WM 34.52 53.05 31.46 29.27 36.13a   22.10 44.60 23.05 24.79 27.52a  
  % P - - - - -   - - - - -  
PMD/LG Repellent AM 1.33 1.78 1.67 4.78 2.39 0.73 – 2.10 1.11 1.56 1.44 3.89 2.00 0.63 – 01.80
  WM 0.82 1.08 1.15 2.52 1.32b   0.66 0.93 1.05 2.17 1.14b  
  % P 97.01 97.13 95.66 88.08 94.84   96.43 97.15 95.78 89.02 94.85  
20% DEET AM 15.22 19.78 13.89 18.44 16.83 10.17 – 17.25 13.56 18.33 12.89 17.22 15.50 9.13 – 15.76
  WM 10.59 16.12 11.68 15.28 13.28c   9.59 14.96 10.59 13.59 12.02c  
  % P 65.75 68.15 63.86 54.03 63.63   56.41 66.53 62.21 51.41 60.11  
  1. AM = arithmetic mean mosquito landings per person hour.
  2. WM = William's mean mosquito landings per person hour. Means followed by different letters are significantly different.
  3. % P = Percentage protection i.e. 100 - ((mosquito landings on treatment ÷ mosquito landings on control) × 100).