Volume 14, Number 11—November 2008
Research
Mixture for Controlling Insecticide-Resistant Malaria Vectors
Cédric Pennetier1
, Carlo Costantini, Vincent Corbel, Séverine Licciardi, Roch K. Dabiré, Bruno Lapied, Fabrice Chandre, and Jean-Marc Hougard
, Carlo Costantini, Vincent Corbel, Séverine Licciardi, Roch K. Dabiré, Bruno Lapied, Fabrice Chandre, and Jean-Marc HougardTable 2
Regression parameters (standard errors) and median and 90% effective duration of effectiveness of antimalarial vector treatments*
| Treatment | a | b | ET50, d (95% CI) | ET90, d |
|---|---|---|---|---|
| First trial | ||||
| PM+DEET | 2.814 (±0.737) | –0.194 (±0.039) | 14.5 (11.1–16.4) | 3.2 |
| PM+KBR | 5.932 (±0.628) | –0.337 (±0.032) | 17.6 (16.8–18.2) | 11.1 |
| Kothrin |
2.693 (±0.656) |
–0.100 (±0.033) |
26.8 (22.7–42.2) |
4.9 |
| Second trial | ||||
| PM+DEET | 2.907 (±0.520) | –0.184 (±0.030) | 15.8 (13.8–17.7) | 3.9 |
| PM+KBR | 1.424 (±0.657) | –0.090 (±0.036) | 15.9 (5.4–22.7) | –8.6 |
| Kothrin | 0.136 (±0.320) | –0.030 (±0.019) | 4.5 (0–13.9) | –68.1 |
*First trial run in dry season (May and June); second trial run in rainy season (September and October). a, intercept; b, slope of curve; ET50 and ET90, median and 90%, respectively, effective time of the minimal adequate regression model fitted to the experimental hut data; CI, confidence interval; PM, pirimiphos methyl; DEET, diethyl-3-methylbenzamide; KBR, hydroxyethyl isobutyl piperidine carboxylate; Kothrin, 20% deltamethrin (Bayer Crop Science, Monheim am Rhein, Germany).
