The Brain-Cousens hormesis models
Heart rate baroreflexes for rabbits
Michaelis-Menten model
The four-parameter Weibull functions
Comparison of effective dose values
ANOVA for dose-response model fits
Maximum mean response
The four-parameter log-logistic function
Isobutylalcohol in nutrient solution in which lettuce plants were grown
Deguelin applied to chrysanthemum aphis
Example of plant growth curve from Covarelli and Onofri (1998)
Fractional polynomial-logistic dose-response models
Showing starting values used
Printing key features
Extracting residuals from model
Creating isobolograms
Fitting mixture models
The effect of terbuthylazin on growth rate
Summarising non-linear model fits
Calculating yield loss parameters
Mortality of tobacco budworms
Effect of an effluent on the growth of mysid shrimp
The two-parameter Weibull functions
Herbicide applied to Galium aparine
Test data from a 21 day fish test
Exponential decay model
Earthworm toxicity test
The three-parameter Weibull functions
Asymptotic regression model
Bread and meat for the sandwich
Effect of technical grade and commercially formulated auxin herbicides
Example from Finney (1971)
Estimating effective doses
The Brain-Cousens hormesis models
Expected or predicted response
Transform-both-sides Box-Cox transformation
The three-parameter log-logistic function
Display available dose-response models
Fitting dose-response models
Vinclozolin from AR in vitro assay
Daphnia test
Mizon-Richard test for dose-response models
Leaf length of barley
Sets control arguments
Log-normal dose-response model
Effect of erythromycin on mixed sewage microorganisms
The Cedergreen-Ritz-Streibig model
Effect of cadmium on growth of green alga
Potency of two herbicides
Lack-of-fit test for the mean structure based on cumulated residuals
Extracting the log likelihood
Model-robust dose-response modelling
Simulating a dose-response curve
Gompertz growth models
Mechlorprop and terbythylazine tested on Lemna minor
The logistic model
Dose-response model for estimation of no effect concentration (NEC).
Confidence Intervals for model parameters
The modified baro5 function
Weight gain for different methionine sources
Extract Model Coefficients
Information on estimation
Effect of ferulic acid on growth of ryegrass
Searching through a range of initial parameter values to obtain convergence
Printing summary of non-linear model fits
Weibull model functions
Estimation of ED values using model-averaging
Model function for the universal response surface approach (URSA) for the quantitative assessment of drug interaction
The Cedergreen-Ritz-Streibig model
Effect of sodium pentachlorophenate on growth of fathead minnow
Glyphosate and metsulfuron-methyl tested on algae.
Acifluorfen and diquat tested on Lemna minor.
Cedergreen-Ritz-Streibig dose-reponse model for describing hormesis
Comparing selectivity indices across curves
The log-logistic function
Competition between two biotypes
Simulating ED values under various scenarios
Volume of algae as function of increasing concentrations of a herbicide
Root length measurements
Comparison of parameters
Extract fitted values from model
Calculating variance-covariance matrix for objects of class 'drc'
Mean function for the Gompertz dose-response or growth curve
Checking the model fot
Prediction
Plotting fitted curves for a 'drc' or 'mrdrc' object
Neill's lack-of-fit test for dose-response models
Inhibition of photosynthesis
Model selection
The five-parameter log-logistic function
The two-parameter log-logistic function
Dose-response profile of degradation of agrochemical using lepidium
The derivative of the Gompertz function
Two-phase dose-response model
Updating and re-fitting a model
Dose-response profile of degradation of agrochemical using nasturtium