Description Usage Format Details Source References Examples
Data to illustrate the use of WCE.
1 | data("drugdata")
|
A data frame with 77038 observations from 500 individuals. The data frame is formatted in an interval format. Contains 7 variables.
Id
a numeric vector to identify observations that belong to the same individual (Id).
Event
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.
Start
a numeric vector indicating the beginning of the interval.
Stop
a numeric vector indicating the end of the interval.
sex
a numeric vector indicating males (0) and females (1).
age
a numeric vector representing age at baseline.
dose
a numeric vector representing time-dependent doses of a drug.
The variables sex
and 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 ( https://cran.r-project.org/package=PermAlgo).
Sylvestre, MP, & Abrahamowicz, M. (2008). Comparison of algorithms to generate event times conditional on time-dependent covariates. Statistics in Medicine, 27(14), 2618-2634.
1 |
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