Skip to main content

Table 2 Experiment 2: Impact of CRDs on indoor and outdoor catch, foraging and mortality of mosquitoes

From: Controlled release spatial repellent devices (CRDs) as novel tools against malaria transmission: a semi-field study in Macha, Zambia

 

Outcomes

Number of mosquitoes (% of those captured)

Odds ratio

95% CI

p

CRD present (captured n = 1410)

CRD absent (captured n = 1437)

Indoor

Total catcha

361 (25.6)

900 (62.6)

0.20

0.17, 0.24

0.001

Foragingb

28 (2.0)

81 (5.6)

0.34

0.22, 0.53

0.001

Outdoor

Total catcha

1049 (74.4)

537 (37.3)

1.10

0.91, 1.34

0.332

Foragingb

234 (16.6)

228 (15.9)

1.06

0.87, 1.30

0.560

Indoors and Outdoors

Dead

55 (3.9)

52 (3.6)

1.05

0.71, 1.56

0.800

  1. In Experiment 2, Four CRDs were hung from the rafters of the house in the SFS. There were no occupants in the hut. CRDs were alternated in a cross-over design and impacts on released female An. gambiae s.s. mosquitoes studied over 10 experimental nights. Number captured refers to total numbers retrieved the following morning from all study nights. Odds ratios were generated from generalized linear models (GLMs) using a Poisson distribution with logit link function comparing of number of mosquitoes collected with or without the CRD
  2. Italic values indicate significance of p value (p < 0.05)
  3. aTotal catch represents sum of foraging mosquitoes caught in light traps, and those found alive or dead the next morning
  4. bForaging represents total caught in light traps