ayers {mrt} | R Documentation |
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.
data(ayers)
A data frame with 287 observations on the following 9 variables.
partno
dep1
dep2
dep3
dep4
anx1
anx2
anx3
anx4
Wright, D.B. & London, K. (in press). Multilevel modelling: Beyond the basic applications. British Journal of Mathematical and Statistical Psychology.