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Table 1 Probit analysis of permethrin mortality and synergistic effect of piperonyl butoxide in head louse samples of northwest Iran

From: A comprehensive survey of permethrin resistance in human head louse populations from northwest Iran: ex vivo and molecular monitoring of knockdown resistance alleles

Study group

Sample size

aa

bb

χ2

P

LT90 (95% CI)

Permethrin

199

− 7.46

2.78

10.33

0.00

22.5 (14.8–95.2)

Permethrin + PBO

186

− 6.64

2.55

10.71

0.00

20.9 (13.5–55.2)

  1. CI Confidence interval, LT50 median lethal time (h), LT90 time (h) at which 90% of samples had died, PBO piperonyl butoxide
  2. aIntercept of the regression line
  3. bSlope of the regression line
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Parasites & Vectors

ISSN: 1756-3305

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