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Table 5 Cox’s proportional hazards model analyses of the emergence of larvae exposed from second 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 − 0.39 (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*
  1. * P < 0.05, *** P < 0.001