The statistical analysis of slope ratio assays using SAS software

SAS is a powerful statistical package but it does not cover all analyses that a user may require particularly in a specialized area such as biological assay. A SAS program SLOPE has been developed for the analysis of biological assays in complete randomization based on the slope ratio method. The program is capable of checking the statistical validity of an assay and estimating the potencies of test preparations relative to a standard. It calculates potencies and their corresponding confidence intervals for a group of bioassays where each assay has equal number of preparations. It also allows the user to produce scatter plots of response by dose.