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Table 4 Median percentage mortality (and inter-quartile ranges (IQR)), and the sums of mosquitoes of different taxa killed per night in experimental huts fitted with different IRS and LLIN treatments during the first spray round (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

  Mortality of Anopheles arabiensis Mortality of Culex species Mortality of Mansonia species
IRS/LLIN combinations Median (IQR) Total dead (n)^ Median (IQR) Total dead$ Median (IQR) Total dead$
Untreated nets only** 7.1 (3.8 - 14.0) 403 (60) 1.0 (0.0 - 06.2) 77 16.5 (5.5 - 36.9) 170
Olyset® only 11.8 (7.1 - 17.2) 709 (60) 3.9 (0.0 - 08.8) 121 33.3 (6.2 - 50.0) 285
PermaNet 2.0® only 19.5 (13.6 - 26.5) 844 (60) 2.4 (0.0 - 09.0) 87 50.0 (39.6 - 70.1) 343
Icon Life® only 19.0 (12.4 - 27.5) 1028 (60) 2.7 (0.0 - 11.1) 111 50.0 (29.6 - 62.8) 444
Pirimiphos methyl and untreated nets 16.6 (12.1 - 28.7) 836 (40) 9.8 (2.6 - 20.4) 136 42.9 (20.4 - 51.1) 300
Pirimiphos methyl and Olyset® 16.4 (13.1 - 24.9) 980 (40) 7.4 (2.3 - 16.7) 102 41.2 (22.2 - 68.0) 255
Pirimiphos methyl and PermaNet 2.0® 29.0 (18.8 - 36.2) 1196 (40) 6.9 (2.3 - 15.3) 98 71.8 (53.3 - 79.1) 433
Pirimiphos methyl and Icon Life® 21.0 (13.3 - 32.2) 1338 (40) 3.3 (0.3 - 12.5) 108 56.5 (36.6 - 70.3) 433
DDT and untreated nets 14.0 (07.7 - 24.4) 369 (40) 1.4 (0.0 - 13.3) 52 50.0 (18.8 - 66.7) 192
DDT and Olyset® 13.2 (08.8 - 17.2) 411 (40) 3.0 (0.0 - 11.0) 53 46.7 (21.1 - 62.4) 162
DDT and PermaNet 2.0® 17.2 (12.0 - 25.7) 431 (40) 4.2 (0.0 - 12.9) 94 53.8 (36.7 - 66.7) 220
DDT and Icon Life® 12.3 (09.3 - 18.6) 581 (40) 1.8 (0.0 - 08.8) 69 36.1 (20.2 - 50.0) 165
Lambda cyhalothrin and untreated nets 14.8 (10.6 - 22.2) 634 (40) 6.3 (0.3 - 09.9) 106 50.0 (25.0 - 66.9) 304
Lambda cyhalothrin and Olyset® 14.9 (09.6 - 20.6) 755 (40) 6.8 (2.0 - 17.7) 98 66.7 (42.9 - 91.6) 232
Lambda cyhalothrin and PermaNet 2.0® 20.6 (15.3 - 26.5) 802 (40) 6.3 (0.3 - 13.6) 110 64.3 (50.0 - 80.0) 307
Lambda cyhalothrin and Icon Life® 21.6 (16.8 - 26.9) 1055 (40) 5.1 (1.4 - 18.9) 114 62.7 (46.6 - 77.6) 364
  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 volunteer used untreated nets.