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Table 2 Median numbers (and inter-quartile ranges (IQR)), and the sum of mosquitoes of different taxa caught per night in experimental huts fitted with different IRS and LLIN treatments during the dry season tests

From: Comparative field evaluation of combinations of long-lasting insecticide treated nets and indoor residual spraying, relative to either method alone, for malaria prevention in an area where the main vector is Anopheles arabiensis

  Anopheles arabiensis Culex species Mansonia species
IRS/LLIN combinations Median (IQR) Sum(n)^ Median (IQR) Sum$ Median (IQR) Sum$
Untreated nets alone** 66.5 (20.3 - 103.8) 4596 (60) 26.0 (9.0 - 62.3) 2388 9.5 (4.0 - 21.0) 802
Olyset® alone 89.0 (62.3 - 128.5) 6047 (60) 26.5 (10.0 - 65.8) 2701 11.0 (3.3 - 15.8) 743
PermaNet 2.0® alone 67.0 (46.8 - 95.0) 4420 (60) 28.0 (10.3 - 56.3) 2257 7.0 (4.0 - 16.0) 627
Icon Life® alone 79.0 (47.3 - 130.0) 6492 (60) 23.0 (11.3 - 66.8) 2434 13.5 (4.5 - 23.0) 910
Pirimiphos methyl only 89.0 (57.5 -162.8) 4512 (40) 25.5 (10.5 - 51.5) 1437 13.0 (6.3 - 27.3) 669
Pirimiphos methyl and Olyset® 119.5 (71.3 -175.5) 5466 (40) 27.0 (9.8 - 71.3) 1555 10.0 (3.0 - 16.0) 496
Pirimiphos methyl and PermaNet 2.0® 87.5 (60.3 - 139.3) 4691 (40) 22.5 (11.0 - 57.5) 1438 13.0 (7.3 - 23.0) 656
Pirimiphos methyl and Icon Life® 124.5 (78.0 - 216.5) 6022 (40) 33.5 (14.5 - 66.5) 1884 13.5 (7.0 - 30.8) 800
DDT only 45.0 (32.3 -94.3) 2605 (40) 21.5 (10.3 - 48. 3) 1380 10.0 (3.3 - 15.8) 414
DDT and Olyset® 74.5 (45.5 - 102.8) 3162 (40) 26.0 (7.3 - 54.5) 1650 8.0 (3.0 - 15.0) 366
DDT and PermaNet 2.0® 55.5 (38.3 - 74.8) 2728 (40) 24.5 (10.3 - 44.8) 1530 6.5 (3.3 - 17.5) 414
DDT and Icon Life® 94.0 (62.5 - 128.0) 4017 (40) 22.5 (10.0 - 48.5) 1709 10.0 (4.0 - 14.8) 422
Lambda cyhalothrin alone 82.0 (60.8 - 137.8) 4212 (40) 34.0 (9.5 - 67.3) 1673 9.5 (6.0 - 15.0) 533
Lambda cyhalothrin and Olyset® 99.0 (61.0 - 186.8) 5323 (40) 29.0 (7.3 - 51.8) 1355 6.5 (2.0 - 12.5) 361
Lambda cyhalothrin and PermaNet 2.0® 85.5 (41.5 - 141.0) 3931 (40) 31.0 (9.3 - 64.8) 1596 7.0 (3.0 - 17.0) 494
Lambda cyhalothrin and Icon Life® 106.0 (59.3 - 174.5) 5434 (40) 28.5 (7.0 - 56.3) 1477 11.5 (5.0 - 23.0) 598
  1. ^ The term ‘n’ refers to total number of replicates.
  2. $ The number of replicates (n) was the same as for Anopheles arabiensis.
  3. **Controls refer to unsprayed huts in which volunteers used untreated nets.