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This study compares statistical methodologies for the detection of low levels of insecticide resistance in the German cockroach. Results show that logistic regression and resistance ratios are relatively ineffective in distinguishing modest differences between strains, whether dose-mortality or time...

Numerous studies have shown that German cockroaches, Blattella germanica (L.), are often resistant to insecticides in settings where insecticides have been used extensively in the past. We have now examined resistance in German cockroaches collected in homes in which insecticide usage has been minim...