schoolgirls: The Heights of Schoolgirls

In DPpackage: Bayesian Nonparametric Modeling in R

Description

This data set consider growth information of 20 preadolescent schoolgirls reported by Goldstein (1979, Table 4.3, p. 101). The height of girls was measured on a yearly basis from age 6 to 10. The measurements are given at exact years of age, some having been previously adjusted to these. Further, the girls were classified according to the height of their mother into three categories: short mothers, medium mothers and tall mothers.

Usage

data(schoolgirls)

Format

A data frame with 100 observations on the following 4 variables.

height

a numeric vector giving the height in cm

child

an ordered factor giving a unique identifier for the subject in the study

age

a numeric vector giving the age of the child in years

group

a factor with levels 1 (short), 2 (medium), and 3 (tall) giving the mother category

Details

Measurements reported by Goldstein(1979) for one of the girls (child 5) were 114.5, 112.0, 126.4, 131.2, and 135.0. In this data set, the second measurement was replaced by 122.0.

Source

Goldstein, H. (1979) The Design and Analysis of Longitudinal Studies. London: Academic Press.

References

Verbeke, G., and Molenberghs, G. (2000) Linear Mixed Models for Longitudinal Data. New York: Springer-Verlag.(Section 12.7)

Examples

data(schoolgirls)
## maybe str(schoolgirls) ; plot(schoolgirls) ...

Example output

 
DPpackage 1.1-7.4
 
Copyright (C) 2006 - 2012, Alejandro Jara
Department of Statistics
P.U. Catolica de Chile
 
Support provided by Fondecyt
11100144 grant.
 

DPpackage documentation built on May 1, 2019, 10:23 p.m.