Data to illustrate the use of WCE.
A data frame with 77038 observations from 500 individuals. The data frame is formatted in an interval format. Contains 7 variables.
a numeric vector to identify observations that belong to the same individual (Id).
a numeric vector representing the event of interest. Takes the value of 1 in the interval during which the event occurs and is 0 otherwise.
a numeric vector indicating the beginning of the interval.
a numeric vector indicating the end of the interval.
a numeric vector indicating males (0) and females (1).
a numeric vector representing age at baseline.
a numeric vector representing time-dependent doses of a drug.
age are covariates. They are optional and illustrate the inclusion of adjustment variables. Covariates can be numeric or factors.
This dataset was simulated using the
PermAlgo package ( http://cran.r-project.org/web/packages/PermAlgo/index.html).
Sylvestre, MP, & Abrahamowicz, M. (2008). Comparison of algorithms to generate event times conditional on time-dependent covariates. Statistics in Medicine, 27(14), 2618-2634.