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Table 2. Correlations between resistance to different pyrethroids in African malaria vector species.

From: Assessing cross-resistance within the pyrethroids in terms of their interactions with key cytochrome P450 enzymes and resistance in vector populations

Pyrethroid combination Paired sample size (N) r
Deltamethrin vs λ-cyhalothrin
 Anopheles funestus subgroup 46 0.818*
 Anopheles funestus 24 0.865*
 Anopheles arabiensis 28 0.946*
 Anopheles coluzzii 18 0.863*
 Anopheles coluzzii/gambiaea 19 0.603*
 Anopheles gambiae 19 0.418 n.s.
Permethrin vs λ-cyhalothrin
 Anopheles funestus subgroup 26 0.786*
 Anopheles funestus 16 0.845*
 Anopheles arabiensis 31 0.859*
 Anopheles coluzzii 14 0.740*
 Anopheles coluzzii/gambiaea 17 0.790*
 Anopheles gambiae 4 Not tested
Deltamethrin vs permethrin
 Anopheles funestus subgroup 113 0.608*
 Anopheles funestus 69 0.726*
 Anopheles arabiensis 116 0.840*
 Anopheles coluzzii 48 0.793*
 Anopheles coluzzii/gambiaea 63 0.714*
 Anopheles gambiae 75 0.782*
  1. n.s., non-significant results (at the 0.05 level with a Holm-Bonferroni correction)
  2. *Significant results (at the 0.05 level with a Holm-Bonferroni correction)
  3. aAnopheles coluzzii/gambiae refers to mosquito samples that were undifferentiated between An. coluzzii (M form) and An. gambiae (S form), before they were recognised as two species