ayers {mrt}R Documentation

Birth trauma data

Description

Data from Susan Ayers' (1999) research on trauma after childbirth. These are described in Wright and London's (in press) review of multilevel modeling. They are used to illustrate different covariance structures.

Usage

data(ayers)

Format

A data frame with 287 observations on the following 9 variables.

partno
a numeric vector
dep1
a numeric vector
dep2
a numeric vector
dep3
a numeric vector
dep4
a numeric vector
anx1
a numeric vector
anx2
a numeric vector
anx3
a numeric vector
anx4
a numeric vector

References

Wright, D.B. & London, K. (in press). Multilevel modelling: Beyond the basic applications. British Journal of Mathematical and Statistical Psychology.


[Package mrt version 0.3 Index]