Predict the Lethal Profile factor leading to $x$ % of reduction in survival at a specific time $t$.
Generic method for LPxt, a function denoted \(LP(x,t)\) for
\(x\)\
lpxt(fit, x, ...)# S3 method for SurvFit
lpxt(
fit,
x = 0.5,
t = NULL,
display.exposure = NULL,
interpolate_length = NULL,
max.steps = 100,
accuracy = 0.01,
...
)
# S3 method for LPxt
update(object, accuracy = 0.01, max.steps = 100, ...)
returns an object of class LPxt
An object used to select a method
rate of individuals dying (e.g., \(0.5\) for \(LP_{50}\), \(0.1\) for \(LP_{10}\), ...).
Further arguments to be passed to generic methods
A number giving the time at which \(LP_{x}\) has to be estimated. If NULL, the latest time point of the experiment is used.
A vector of the exposure porfile
of time point in the range of concentration between 0 and the maximal concentration. 100 by default. description.
max steps to find the LPxt
accuracy of the LPxt algorithm (stop when reaching the accuracy).
An object of class LPx