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Table 4 Cox’s proportional hazards model analyses of the emergence of larvae exposed from first instar

From: Impact of sunlight exposure on the residual efficacy of biolarvicides Bacillus thuringiensis israelensis and Bacillus sphaericus against the main malaria vector, Anopheles gambiae

 

Estimate (se)

Hazard ratio

P value

Treatments

 Dosage 1 g/m2

− 0.15 (0.31)

0.86

6.3e−01

 Dosage 1.5 g/m2

− 0.97 (0.31)

0.38

1.6e−03**

 Dosage 2 g/m2

− 1 (0.31)

0.37

1.1e−03**

Protection from sunlight exposure

0.54 (0.31)

1.72

7.9e−02

Days after treatment

0.02 (0)

1.02

5.9e−06***

Interactions between treatments and protection from exposure

 Dosage 1 g/m2 in covered containers

− 2.6 (0.44)

0.07

3.6e−09***

 Dosage 1.5 g/m2 in covered containers

− 1.69 (0.44)

0.18

1.3e−04***

 Dosage 2 g/m2 in covered containers

− 2.08 (0.45)

0.12

3.2e−06***

  1. ** P < 0.01, *** P < 0.001