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TableĀ 2 Results of statistical analysis of the performance of the six experimental arms against wild An. fluviatilis in experimental huts

From: An experimental hut evaluation of Olyset Plus, a long-lasting insecticidal net treated with a mixture of permethrin and piperonyl butoxide, against Anopheles fluviatilis in Odisha State, India

Variables

Untreated polyester neta

Unwashed Olyset Net

Conventionally treated polyester net

Olyset Net washed 20 times

Olyset Plus washed 20 times

Unwashed Olyset Plus

Entry (deterrence)

Ā IRR (95Ā % CI)

1.0

0.16 (0.10ā€“0.26)

0.14 (0.08ā€“0.22)

0.18 (0.11ā€“0.28)

0.12 (0.07ā€“0.20)

0.11 (0.06ā€“0.18)

Ā Z

Ā 

āˆ’7.61

āˆ’8.08

āˆ’7.33

āˆ’8.38

āˆ’8.61

Ā P

Ā 

<0.001

<0.001

<0.001

<0.001

<0.001

Exit (induced exophily)

Ā Odds ratio (95Ā % CI)

1.0

2.86 (1. 50ā€“5.47)

6.13 (2.63ā€“14.25)

2.99 (1.60ā€“5.61)

4.41 (1.95ā€“10.00)

1.62 (0.78ā€“3.38)

Ā Wald statistics

Ā 

10.08

17.70

11.78

12.66

1.67

Ā P

Ā 

0.001

<0.001

0.001

<0.001

0.197

Blood feeding (inhibition)

Ā Odds ratio (95Ā % CI)

1.0

0.10 (0.05ā€“0.21)

0.02 (0.01ā€“0.08)

0.12 (0.06ā€“0.23)

0.13 (0.06ā€“0.27)

0.07 (0.03ā€“0.17)

Ā Wald statistics

Ā 

41.25

37.72

41.12

28.34

32.69

Ā P

Ā 

<0.001

<0.001

<0.001

<0.001

<0.001

Total mortality (killing)

Ā Odds ratio (95Ā % CI)

1.0

b

b

1287.0 (252.9ā€“6550.3)

1732.5 (202.7ā€“14810.7)

b

Ā Wald statistics

Ā Ā Ā 

74.38

46.40

Ā 

Ā P

Ā Ā Ā 

<0.001

<0.001

Ā 
  1. aReference category for all variables, IRR incidence rate ratio
  2. bAs the mortality was 100Ā % in these arms, they were excluded from the logistic regression analysis