ed50

Functions of five estimation method for ED50 (50 percent effective dose) are provided, and they are respectively Dixon-Mood method (1948) doi:10.2307/2280071, Choi's original turning point method (1990) doi:10.2307/2531453 and it's modified version given by us, as well as logistic regression and isotonic regression. Besides, the package also supports comparison between two estimation results.

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