boric {GLMsData}

Dead embryos after exposure to boric acid

Description

The number of mice embryos dead after exposure to four different doses of boric acid

Usage

data(boric)

Format

A data frame with 107 observations on the following 3 variables.

Dose

the dose of boric acid (in percent of boric acid in feed); a numeric vector

Dead

the number of embryos dead in utero; a numeric vector

Implants

the total number of embryos; a numeric vector

Details

Mice were fed doses of boric acid in their feed during the first 17 days of gestation; the mice were then sacrificed and the embryos examined. Boric acid is widely used in pesticides and household products.

Source

Terra L. Slaton, Walter W. Piegorsch and Stephen D. Durham (2000) Estimation and testing with overdispersed proportions using the beta-logistic regression model of Heckman and Willis. Biometrics, 56(1), 125–133, Table 4.

References

J. H. Hiendel, C. J. Price, E. A. Field, M. C. Marr, C. B. Myers, R. E. Morrissey, and B. A. Schwetz (1992) Developmental toxocity of boric acid in mice and rats. Fundamental and Applied Toxicology, 18, 266–277.

Examples

	data(boric)
	plot( Dead/Implants ~ Dose, data=boric)