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Table 2 Results of statistical models for habitat occupancy and the number of early (L1 & L2), late (L3, L4 & Pupae) and all instar larvae as measured every 2 weeks in a 500 × 500 m grid within each village

From: Efficacy of extended release formulations of Natular™ (spinosad) against larvae and adults of Anopheles mosquitoes in western Kenya

Parameter

Risk Ratio

LowerCL

UpperCL

χ2

P-value

Occupancy*

Scale

2.72

2.72

2.72

 

 < 0.001

Intercept

0.62

0.59

0.65

379.4

 < 0.001

Intervention

0.06

0.06

0.07

2594.2

 < 0.001

Control

Ref.

Ref.

Ref.

  

Early instars

Dispersion

12,121.4

6634.8

23,078.3

 

 < 0.001

Intercept

0.81

0.75

0.87

30.5

 < 0.001

Intervention

0.08

0.07

0.09

1770.1

 < 0.001

Control

Ref.

Ref.

Ref.

  

Late instars

Dispersion

141.22

98.49

208.28

 

 < 0.001

Intercept

0.59

0.55

0.62

299.2

 < 0.001

Intervention

0.03

0.03

0.04

2019.1

 < 0.001

Control

Ref.

Ref.

Ref.

  

All instars

Dispersion

152.25

116.67

201.67

 

 < 0.001

Intercept

1.39

1.32

1.47

134.6

 < 0.001

Intervention

0.06

0.05

0.07

3517.5

 < 0.001

Control

Ref.

Ref.

Ref.

  
  1. Habitat occupancy was compared using logistic regression while the number of larvae per dip was compared using negative binomial regression
  2. *The outcome for habitat occupancy is an odds ratio rather than a risk ratio