Table 3 Marginal effect of larviciding in Zimbabwe and Botswana
Larvae type | Marginal effect | IRR (CI) | P value | % reduction |
|---|---|---|---|---|
All larvae | ||||
Both countries | −1.94 | 0.14 (0.09; 0.23) | <0.001 | 86 |
Zimbabwe | −1.06 | 0.35 (0.24; 0.51) | <0.001 | 65 |
Botswana | −2.51 | 0.08 (0.06; 0.11) | <0.001 | 92 |
Larval stage | ||||
Early instar | ||||
Both countries | −1.47 | 0.23 (0.17; 0.32) | <0.001 | 77 |
Zimbabwe | −1.23 | 0.29 (0.17; 0.50) | <0.001 | 71 |
Botswana | −1.83 | 0.16 (0.12; 0.22) | <0.001 | 84 |
Late instar | ||||
Both countries | −2.40 | 0.09 (0.04; 0.19) | <0.001 | 91 |
Zimbabwe | −0.56 | 0.57 (0.31; 1.03) | 0.062 | 43 |
Botswana | −4.04 | 0.02 (0.01; 0.04) | <0.001 | 98 |
Larvae species | ||||
ALL Anopheles | ||||
Both countries | −1.63 | 0.20 (0.05; 0.76) | 0.019 | 80 |
Zimbabwe | −0.64 | 0.53 (0.30; 0.92) | <0.025 | 47 |
Botswana | −3.01 | 0.05 (0.02; 0.13) | <0.001 | 95 |
ALL Culex | ||||
Both countries | −1.03 | 0.36 (0.10; 1.23) | 0.102 | 64 |
Zimbabwe | −0.86 | 0.42 (0.26; 0.68) | <0.001 | 58 |
Botswana | −2.21 | 0.11 (0.05; 0.27) | <0.001 | 89 |