A data frame with 2000 observations on the following 6 variables. multiLongCount is a simulated bivariate longitudinal count dataset assuming there are 500 subjects in the study whose data are collected at 4 equally-spaced time points.
A data frame with 2000 observations on the following 6 variables.
a numeric vector for subject ID
a numeric vector for the first longitudinal count response
a numeric vector for the second longitudinal count response
a numeric vector for the covariate, X
a numeric vector for the time point at which observations are collected
a numeric vector for the interaction between X and time
The covariates, X and time are the standardized values indeed. The related interaction is calculated by using these standardized values. X is a time-independent covariate. The R script to generate the data set is given in the Examples section of the mmm function.
Asar, O. (2012). On multivariate longitudinal binary data models and their applications in forecasting. MS Thesis, Middle East Technical University
Erhardt, V. (2009). corcounts: Generate Correlated Count Random Variable. R package version 1.4. URL http://CRAN.R-project.org/package=corcounts.
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