Table 5. Parameters for the Gompertz and Logistic models used to describe the predicted age structures of Aedes aegypti collected from Tri Nguyen village.
Gompertz | Logistic | Likelihood Ratio test | |||||
Season | Method | a | b | a | b | s | p-value |
Wet/cool | BPA | 0.106 | 0.218 | 0.050 | 0.374 | 0.123 | 0.032 |
Dry/cool | BPA | 0.021 | 0.174 | *convergence not achieved | |||
Dry/hot | BPA | 0.068 | 0.190 | 0.049 | 0.239 | 0.058 | 0.016 |
Wet/cool | BG | 0.306 | 0.097 | 0.000 | 1.829 | 0.794 | 0.015 |
Dry/cool | BG | 0.001 | 0.219 | *convergence not achieved | |||
Dry/hot | BG | 0.025 | 0.199 | 0.013 | 0.252 | 0.053 | 0.032 |
The likelihood ratio test indicates whether the more complex Logistic model significantly improved the fit. P-values less than 0.01 indicate the more complex model was more appropriate. Convergence not achieved indicates the nls algorithm failed to find an optimal solution.