Longitudinal epilepsy data from Morris et al. (1977) . This documentation is based on Chapter 14.2 of Skrondal and Rabe-Hesketh (2004) , where the dataset is used. See also Rabe-Hesketh et al. (2003) .
Format
diet A data frame with 236 rows and 7 columns:
- id
Subject ID.
- age
Age (standardized).
- bus
Dummy variable indicating whether the subject is a bus driver or banking staff.
- item
Integer indicating whether the outcome is fiber intake at time 1 (item = 1), fiber intake at time 2 (item = 2), or coronary heart disease (item = 3).
- y
Outcome.
- chd
Dummy variable indicating whether y is an indicator for coronary heart disease, coded as 0/1.
- fiber
Dummy variable indicating whether y is a fiber measurement at either timepoint 1 or 2.
- fiber2
Dummy variable indicating whether y is a fiber measurement at timepoint 2.
References
Morris JN, Marr JW, Clayton DG (1977).
“Diet and Heart: A Postscript.”
Br Med J, 2(6098), 1307–1314.
ISSN 0007-1447, 1468-5833, doi:10.1136/bmj.2.6098.1307
.
Rabe-Hesketh S, Pickles A, Skrondal A (2003).
“Correcting for Covariate Measurement Error in Logistic Regression Using Nonparametric Maximum Likelihood Estimation.”
Statistical Modelling, 3(3), 215–232.
ISSN 1471-082X, doi:10.1191/1471082X03st056oa
.
Skrondal A, Rabe-Hesketh S (2004).
Generalized Latent Variable Modeling, Interdisciplinary Statistics Series.
Chapman and Hall/CRC, Boca Raton, Florida.
See also
Other datasets:
cognition,
epilep,
hsced,
latent_covariates,
latent_covariates_long,
lifespan,
mresp,
mresp_hsced