Figure 7

Logistic regression: deltamethrin vs. mosquito survival in bioassays. The relation between deltamethrin concentration in swatches of LLIN material and corrected mosquito survival in bioassays can be modelled as a logistic regression, using the function f(x) = 1/(1 + e^{0.1253 + 0.0807x}) (p < 0.0001). The LD₉₀ of deltamethrin-treated LLIN material is calculated as 25.7 mg/m².