philion function

Dose response data

Four small experiments with the purpose of estimating the EC50 of a biological dose-response relation. data

philion

Format

A data frame with 30 observations on the following 3 variables:

• experiment: a numeric vector; codes 1 through 4 denote the experiment number.
• dose: a numeric vector, the dose.
• response: a numeric vector, the response (counts).

Details

These data were discussed on the mailing lists, initially suggesting a log-linear Poisson regression, but actually a relation like $y=ymax/(1+(x/beta)^alpha)$ is more suitable.

Source

Original data from Vincent Philion, IRDA, Qu'ebec.

References

https://stat.ethz.ch/pipermail/r-help/2003-July/036828.html (Thread on R-help mailing list: "inverse prediction and Poisson regression", started by Vincent Philion on July 25, 2003.)