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Table 1 Total marked Ae. aegypti 1 recaptured, active ingredient (AI) air concentration, knock down and deterrency during field evaluations

From: Identifying the effective concentration for spatial repellency of the dengue vector Aedes aegypti

  Mosq. recaptured AI air concentration (μg/um3)3 % Knock down4 Deterrency
Treatment No. Mosq. %(n/Total release)2 Range % Quantifiable samples (n/Total) In (n/Total) Out (n/Total) Total entry % (n/Total control) P5
(Mean±SD)
In Out
No coil 48 5.3 - - - 0 - 48 0  
(Hut A) (0/60)
Blank coil (Hut B) 25 2.8 - - - 0.8 0.8 25 48 0.008
(2/240) (2/240)  
(x2=14.387)
0.00625% 20 2.2 0.001-0.11 0.001-0.03 100(48/48) 1.7 1.3 20 58
Metofluthrin
(0.058±0.03) (0.019±0.01)
(4/240) (3/240)
(Hut C)
Chemical-free netting (Hut A) 100 8.3 ND-1.22 - 10(1/10)* 0 - 100 0  
(n/a) (0/320)  
2g/m2 DDT6 (Hut B) 30 2.5 ND-1.57 - 65(11/17) 0 - 30 70 <0.0001(x2=45.186)
(0.74±0.45)† (0/320)
2g/m2 DDT 47 3.9 ND-3.98 - 93(28/30) 0 - 47 53
(0/320)
(Hut C) (1.42±0.96)
  1. 14-7 day old, 24h sugar-starved females.
  2. 2Metofluthrin evaluation = 900; DDT evaluation = 1200.
  3. 3Both indoor/outdoor air sampling during metofluthrin evaluations; only indoor air sampling during DDT evaluations; ND = not detectable.
  4. 4Observations from sentinel cohorts within screened cages positioned at air sampling locations.
  5. 5Chi-square analyses with α = 0.05 and 2 degrees of freedom.
  6. 6Treated-netting panels comprising 50% surface area of interior hut walls.
  7. *One sample; a labeling error is suspected.
  8. Median concentration of airborne DDT significantly different between treatment huts (p<0.05) based on Mann–Whitney Rank Sum Test.