Table 1.
Mean mortalities and 50% and 90% knockdown times (in minutes) (KDT50 and KDT90) of female Anopheles arabiensis in populations from eastern and central Sudan following exposure to permethrin.
| Population | No. | Mortalities % (95% CI) | KDT50 (95% CI) | KDT90 (95% CI) |
|---|---|---|---|---|
| Sennar | 300 | 61.3 (44.4 - 78.3) bc | 31.9 (30.2 - 33.7) | 105.1 (91.4 - 118.8) |
| Mayirno | 100 | 81.0 (79.8 - 82.2) abc | 25.3 (18.4 - 32.2) | 59.7 (52.7 - 66.6) |
| Damazin | 300 | 77.3 (60.4 - 94.3) abc | 37.4 (29.6 - 43.6) | 51.6 (30.3 - 72.8) |
| Khartoum | 175 | 97.5 (96.3 - 98.7) a | 19.8 (18.2 - 21.2) | 33.9 (32.1 - 36.2) |
| Kosti | 300 | 60.0 (43.1 - 77.0) c | 27.9 (21.1 - 51.5) | 79.7 (63.8 - 95.5) |
| Al Shuwak | 160 | 95.6 (94.4 - 96.8) ab | 31.0 (26.2 - 35.9) | 55.2 (50.3 - 60.1) |
| Al Faw | 100 | 97.0 (95.8 - 98.2) a | 30.1 (24.9 - 35.3) | 53.5 (48.3 - 58.7) |
Columns not connected by the same letter are significantly different at a level of P <0.05 (Tukey-Kramer HSD test).