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

Table 5 Cox’s proportional hazards model analyses of the emergence of larvae exposed from second instar

	Estimate (se)	Hazard Ratio	P value
Treatments
Dosage 1 g/m²	− 0.39 (0.18)	0.68	0.031*
Dosage 1.5 g/m²	− 0.29 (0.18)	0.75	0.11
Dosage 2 g/m²	− 0.38 (0.18)	0.68	0.040*
Protection from sunlight exposure	0.25 (0.18)	1.28	0.17
Days after treatment	0.08 (0)	1.08	0.000***
Interactions between treatment and protection from exposure
Dosage 1 g/m² in covered containers	− 0.4 (0.26)	0.86	0.13
Dosage 1.5 g/m² in covered containers	− 0.6 (0.26)	0.70	0.020*
Dosage 2 g/m² in covered containers	− 0.55 (0.26)	0.63	0.033*

ISSN: 1475-2875