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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.