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Table 1 Washing frequency and net appearance

From: Effectiveness of a long-lasting insecticide treatment kit (ICON® Maxx) for polyester nets over three years of household use: a WHO phase III trial in Tanzania

Survey (month)

IconMaxx

lambda-cyhalothrin CTN

No. nets

Mean (SD) no. of washesa

General aspect of nets %

No. nets

Mean (SD) no. of washesa

General aspect of nets %

Clean

Slightly dirty

Dirty

Very Dirty

Clean

Slightly dirty

Dirty

Very Dirty

Cross section survey

 0

30

0

30

0

0

0

30

0

30

0

0

0

 6

30

3 (2.0)

7

21

69

3

30

2 (1.7)

18

26

52

4

 12

30

1 (0.3)

45

0

39

16

30

1 (0.4)

36

3

36

25

 24

30

4 (1.5)

13

13

55

19

 36

50

4 (2.6)

16

6

56

22

Cohort survey

 0

264

0

100

0

0

0

266

0

266

0

0

0

 12

98

6 (2.0)

29

7

54

10

113

6 (2.0)

36

5

52

7

 24

46

6 (3.2)

28

14

46

12

 36

40

7 (3.5)

26.5

26.5

15

32

  1. aMean number of washes per year