32.1.58 ECanything

Function

\(y = Bt+\frac{Tp-Bt}{1+\left(\frac{EC50}{x}\right)^s} \)

\( where\space EC50 = \frac{ECF}{\left(\frac{F}{100-F}\right)^{1/s}}\)

Brief Description

Fit the EC80 or EC90, etc. instead of the EC50.

Sample Curve

Parameters

Number: 5

Names: ECF, F, Bt, Tp, s

Meanings: ECF= concentration at F percent response, F=constant percent, Bt=bottom asymptote, Tp=top asymptote, s=Hill slope

Lower Bounds: F>0

Upper Bounds: F<100

Derived Parameters

logECF=log(ECF)

span=Tp-Bt

Script Access

nlf_ECanything(x,ECF,F,Bt,Tp,s)

Function File

ECanything.fdf

Category

Dose Response