IC {dr4pl}

Obtain Inhibitory Concentrations (IC) of a dose-response curve

Description

This function obtains estimates of the IC's of a dose-response curve. Typically the IC50 parameter is of interest, but sometimes IC10 or IC90 are important aspects of a dose-response curve. By controlling the function argument, a user can obtain the IC's at various levels.

Usage

IC(object, inhib.percent)

Arguments

object

Object of the class 'dr4pl' for which the IC values are obtained

inhib.percent

Inhibited percentages at which thc IC values are obtained

Value

IC values at the inhibited percentages provided by the argument inhib.percent

Examples

data.test <- data.frame(x = c(0.0001, 0.001, 0.01, 0.1, 1),
                        y = c(10, 9, 5, 1, 0))
obj.dr4pl <- dr4pl(y ~ x,
                   data = data.test)
IC(obj.dr4pl, inhib.percent = c(10, 90))

obj.dr4pl <- dr4pl(Response ~ Dose, data = sample_data_4)  # Fit a 4PL model to data
IC(obj.dr4pl, inhib.percent = c(10, 50, 90))