predict_ecxsys: Predict survival and stress

In stressaddition: Modelling Tri-Phasic Concentration-Response Relationships

Description

Calculate the survivals and stresses of an ECx-SyS model at arbitrary concentrations.

Usage

predict_ecxsys(model, concentration)

Arguments

model	An ECx-SyS model as returned by ecxsys.
concentration	A numeric vector of concentrations.

Value

A data frame (of class "ecxsys_predicted") with the following columns:

concentration

The supplied concentrations.

survival_tox_LL5

The survival predicted by the five-parameter log-logistic model derived from the observations under toxicant stress but without environmental stress.

survival_tox

Modeled survival resulting from toxicant stress.

survival_tox_sys

Modeled survival resulting from toxicant and system stress.

stress_tox

The toxicant stress.

sys_tox

System stress under toxicant stress conditions without environmental stress.

stress_tox_sys

The sum of stress_tox and sys_tox.

survival_tox_env_LL5

The survival predicted by the five-parameter log-logistic model derived from the observations under toxicant stress with environmental stress.

survival_tox_env

Modeled survival resulting from toxicant and environmental stress.

survival_tox_env_sys

Modeled survival resulting from toxicant, environmental and system stress.

stress_env

Environmental stress.

stress_tox_env

The sum of toxicant and environmental stress.

sys_tox_env

System stress under toxicant and environmental stress conditions.

stress_tox_env_sys

The sum of stress_tox_env and sys_tox_env.

Examples

model <- ecxsys(
    concentration = c(0, 0.05, 0.5, 5, 30),
    hormesis_concentration = 0.5,
    survival_tox_observed = c(90, 81, 92, 28, 0),
    survival_tox_env_observed = c(29, 27, 33, 5, 0)
)
p <- predict_ecxsys(model, c(0.001, 0.01, 0.1, 1, 10))

stressaddition documentation built on Nov. 8, 2020, 4:27 p.m.