gestation {GLMsData}

Gestation time

Description

The gestation time for 1513 infants

Usage

data(gestation)

Format

A data frame with 21 observations on the following 4 variables.

Age

the gestational age in weeks; a numeric vector

Births

the number of births; a numeric vector

Weight

the mean birthweight in kilograms; a numeric vector

SD

the standard deviation of the birthweight in each group in kilograms; a numeric vector

Details

The gestation time for 1513 infants born in St George's Hospital, London, to Caucasian mothers willing to participate between August 1982 and March 1984.

Source

J. M. Bland, J. L. Peacock, H. R. Anderson, and O. G. Brooke (1990) The adjustment of birthweight for very early gestational ages: two related problems in statistical analysis. Applied Statistics, 39(2), 229–239.

Examples

data(gestation)
summary(gestation)