A path to the file with table of follow-up oservations (longitudinal table).
File formats: csv, sas7bdat
y
A path to the file with table of vital statistics (mortality) table.
File formats: csv, sas7bdat
col.id
A name of column containing subject ID.
This ID should be the same in both x (longitudinal) and y (vital statistics) tables.
None: if col.id not provided, the first column of the x and
first column of the y will be used by default.
col.status
A name of the column containing status variable
(0/1, which is an indicator of death/censoring).
Note: if not provided - then the column #2 from the y (vital statistics) dataset will be used.
col.age
A name of age column (also called 't1').
This column represents a time (age) of measurement.
If not provided then the 3rd column from the longitudinal dataset (x) will be used.
col.age.event
A name of 'event' column.
The event column indicates a time when the even occured (e.g. system failure).
Note: if not provided then the 3rd column from the y (vital statistics) dataset will be used.
covariates
A list of covariates (physiological variables).
If covariates not provided, then all columns from longitudinal table having index > 3 will be used as covariates.
interval
A number of breaks between observations for data for discrete model.
This interval must be numeric (integer).
Default = 1 unit of time.
verbose
A verbosing output indicator. Default=FALSE.
Value
A list of two elements: first element contains a preprocessed data for continuous model, with arbitrary intervals between observations and
second element contains a prepocessed data table for a discrete model (with constant intervals between observations).
Examples
## Not run:
library(stpm)
data <- prepare_data(x=system.file("data","longdat.csv",package="stpm"),
y=system.file("data","vitstat.csv",package="stpm"))
head(data[[1]])
head(data[[2]])
## End(Not run)
providing 
.