7.1.3. Response variables
Acute mortality is the most commonly used response variable when looking for interactions between agents (section 3). Acute mortality is appropriate when one of the agents to be tested is an insecticide that will reliably kill bees using standard acute testing protocols (Section 3.1-3.3). The protocols listed all assume that mortality is the response to be measured, but this may not be an appropriate response if the agent under study is not acutely toxic to bees or if a binary sublethal effect is of interest.