`bayesmanecfit`

of models fitted with the brms package`R/bayesmanecfit-class.R`

`bayesmanecfit-class.Rd`

Multiple models fitted with the
`bayesnec`

package are
represented as a `bayesmanecfit`

object, which contains the original
`brmsfit`

fitted objects, names of non-linear models that
were fitted, model averaging WAIC stats, sample size, mean posterior
no-effect toxicity values (NEC, NSEC or N(S)EC), mean model averaged
predictions on the data scale, model averaged residuals, full posterior
distribution of predicated values, and summary statistics of no-effect
toxicity.

See `methods(class = "bayesmanecfit")`

for an overview of
available methods.

`mod_fits`

A

`list`

of fitted model outputs of class`prebayesnecfit`

for each of the fitted models.`success_models`

A

`character`

vector indicating the name of the successfully fitted models.`mod_stats`

A

`data.frame`

of model fit statistics.`sample_size`

The size of the posterior sample. Information on the priors used in the model.

`w_ne_posterior`

The model-weighted posterior estimate of the no-effect toxicity estimate.

`w_predicted_y`

The model-weighted predicted values for the observed data.

`w_residuals`

Model-weighted residual values (i.e. observed - w_predicted_y).

`w_pred_vals`

A

`list`

containing model-weighted posterior predicted values based on the supplied`resolution`

and`x_range`

.`w_ne`

The summary stats (median and 95% credibility intervals) of w_ne_posterior.

`ne_type`

A

`character`

vector indicating the type of no-effect toxicity estimate. Where the fitted model(s) are NEC models (threshold models, containing a step function) the no-effect estimate is a true no-effect-concentration (`NEC`

, see Fox 2010). Where the fitted model(s) are smooth ECx models with no step function, the no-effect estimate is a no-significant-effect-concentration (`NSEC`

, see Fisher and Fox 2023). In the case of a`bayesmanecfit`

that contains a mixture of both NEC and ECx models, the no-effect estimate is a model averaged combination of the NEC and NSEC estimates, and is reported as the`N(S)EC`

(see Fisher et al. 2023).

Fisher R, Fox DR (2023). Introducing the no significant effect concentration (NSEC).Environmental Toxicology and Chemistry, 42(9), 2019–2028. doi: 10.1002/etc.5610.

Fisher R, Fox DR, Negri AP, van Dam J, Flores F, Koppel D (2023). Methods for estimating no-effect toxicity concentrations in ecotoxicology. Integrated Environmental Assessment and Management. doi:10.1002/ieam.4809.

Fox DR (2010). A Bayesian Approach for Determining the No Effect Concentration and Hazardous Concentration in Ecotoxicology. Ecotoxicology and Environmental Safety, 73(2), 123–131. doi: 10.1016/j.ecoenv.2009.09.012.