Hi everyone,
I would like to calculate the EC90 StdError using Phoenix modeling, with the sigmoid Emax model (105 in WLN), we are getting the EC50, Emax, and Gamma values and StdError. I used the formula: EC90=(0.9/(1-0.9))**(1/GAMMA)*EC50 to calculate the EC90.
However, does anyone know how the WLN calculate StdError? How can I calculate StdError for EC90?
Thanks!
Xiuqing