If this is not the correct form of the C-R function, or if certain scenarios predict concentrations well above the range of values for which the C-R function was fitted, avoided mortality may be misestimated.
Performing the fitting properly will result in fewer mortalities. 
mnli hypothesis: Performing the fitting properly will result in fewer mortalities.  premise: If this is not the correct form of the C-R function, or if certain scenarios predict concentrations well above the range of values for which the C-R function was fitted, avoided mortality may be misestimated.