Biosecurity surveillance: quantitative approaches.

Chapter 8 (Page no: 151)

Estimating detection rates and probabilities.

Surveillance activities provide only imperfect detection of biosecurity threats, and so quantifying detection rates and probabilities is important for making reliable inferences from survey data. Furthermore, an understanding of detection rates and probabilities allows for effective survey design and resource allocation to address biosecurity threats. Detection rates and probabilities can be estimated directly via experiments or indirectly during routine surveillance activities. In this chapter we introduce basic presence/absence detection models and provide guidelines for designing a detection experiment. We also summarize other methods available for estimating detection rates and probabilities when pest abundance, as well as presence/absence, affects management.

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