Description Usage Arguments Value References See Also Examples
Function to keep all event times
1 | timesTokeep(data, id, tstart, tstop, mes.cov, time.cov)
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data |
dataframe containing the following variables |
id |
patient's id |
tstart |
date of the beginning of the follow-up (in Date format) |
tstop |
date of the end of the follow-up (in Date format) |
mes.cov |
list of vectors, each of them must contain the names (in character format) of the repeated measurements related to one time-dependent covariate |
time.cov |
list of vectors, each of them must contain the times (in Date format) of the date when the abovementioned measurements were done |
list of two lists, one in Date format the other in numeric format. Each of them contains, for each patient, the event time and the times of changes in time-varying covariates
Graffeo, N., Latouche, A., Le Tourneau C., Chevret, S. (2019) "ipcwswitch: an R package for inverse probability of censoring weighting with an application to switches in clinical trials". Computers in biology and medicine, 111, 103339. doi : "10.1016/j.compbiomed.2019.103339"
1 2 3 4 5 6 7 8 | kept.t <- timesTokeep(toydata, id = "id",
tstart = "randt", tstop = "lastdt",
mes.cov = list(c("ps1", "ps2", "ps3")),
time.cov = list(c("randt", "dt2", "dt3")))
# For example, for patient id=3, to obtain the kept times in Date format:
kept.t[[1]][[3]]
# To obtain the kept times in numeric format:
kept.t[[2]][[3]]
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