Pharmaceutical Statistics Using SAS
by Ph. D. Alex Dmitrienko, Ph. D. Christy Chuang-Stein, Sr. Ralph B. D'Agostino
4.4. Linearity
The linearity of an analytical procedure is defined in terms of its ability to obtain results directly proportional to the concentrations (quantities) of the analyte in the sample within a defined range (ICH, 1995). It is important to note that the linearity criterion is applied to the results, i.e., back-calculated quantities or concentrations, rather than the response signals or instrument response as a function of the dose or quantities.
To illustrate this concept, Program 4.6 performs a linearity assessment by comparing the original concentrations from the ELISA_VS data set to the corresponding back-calculated concentrations obtained in Program 4.5. This program uses the CALC_CONC data set created in Program 4.5. The results ...
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