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Table 2 Mean mortality of and 50% and 90% knockdown times (in minutes) (KDT50 and KDT90) of female Anopheles arabiensis in populations from eastern and central Sudan in response to DDT exposure.

From: Extensive permethrin and DDT resistance in Anopheles arabiensis from eastern and central Sudan

Population No. Mortalities % (95% CI) KDT50 (95% CI) KDT90 (95% CI)
Sennar 320 39.7 (19.8 - 59.53)b 42.3 (22.5 - 62.2) 77.1 (25.89 - 128.3)
Mayirno 110 49.0 (47.8 - 50.18)ab 62.8 (43.5 - 82.2) 97.8 (78.4 - 117.1)
Damazin 300 39.0 (19.1 - 58.86)b 45.7 (34.5 - 70.0) 79.5 (71.2 - 93.1)
Khartoum 200 94.5 (93.3 - 95.68)a 30.4 (26.8 - 33.8) 53.9 (47.2 - 65.7)
Kosti 300 73.3 (53.5 - 93.2)ab 73.8 (70.3 - 77.3) 102.7 (32.8 - 172.7)
Al Shuwak 140 67.1 (66.0 - 68.32)ab 60.4 (35.5 - 85.3) 98.2 (73.8 - 123.1)
  1. Columns not connected by the same letter are significantly different at a level of P < 0.05 (Tukey-Kramer HSD test).