Embryonic mortality was expressed either as cumulative mortality (previous + current counts) or as total death rate (percentage of necropsied embryos from ED3 to ED21).

Embryonic mortality was expressed either as cumulative mortality (previous + current counts) or as total death rate (percentage of necropsied embryos from ED3 to ED21).

For example, cumulative mortality and numbers of healthy larvae at the end of the test could be analysed using probit methods.

a table showing the cumulative mortality at each concentration and the control (and control with the auxiliary substance if required) at each of the recommended observation times

As time passes, the predictability of paying future premiums is related to the cumulative mortality curve to a point in time.