hohnloser {maxstat} | R Documentation |
Left ventricular ejection fraction of patients with malignant ventricular tachyarrhythmias.
Description
A data frame with the left ventricular ejection fraction of patients with malignant ventricular tachyarrhythmias including recurrence-free month and censoring.
Usage
data("hohnloser")
Format
EF
left ventricular ejection in percent
month
recurrence-free month
cens
censoring: 0 cencored, 1 not censored
The data used here is published in Table 1 of Lausen and Schumacher (1992).
Source
The data was first published by Hohnloser et al. (1987), the data used here is published in Table 1 of Lausen and Schumacher (1992).
References
Hohnloser, S.H., Raeder, E.A., Podrid, P.J., Graboys, T.B. and Lown, B. (1987), Predictors of antiarrhythmic drug efficacy in patients with malignant ventricular tachyarrhythmias. American Heart Journal 114, 1–7
Lausen, B. and Schumacher, M. (1992), Maximally Selected Rank Statistics. Biometrics 48, 73–85
Examples
set.seed(29)
library("survival")
# limiting distribution
maxstat.test(Surv(month, cens) ~ EF, data=hohnloser,
smethod="LogRank", pmethod="Lau92")
# with integer valued scores for comparison
maxstat.test(Surv(month, cens) ~ EF, data=hohnloser,
smethod="LogRank", pmethod="Lau92", iscores=TRUE)
# improved Bonferroni inequality
maxstat.test(Surv(month, cens) ~ EF, data=hohnloser,
smethod="LogRank", pmethod="Lau94")
maxstat.test(Surv(month, cens) ~ EF, data=hohnloser,
smethod="LogRank", pmethod="Lau94", iscores=TRUE)
# small sample solution by Hothorn & Lausen
maxstat.test(Surv(month, cens) ~ EF, data=hohnloser,
smethod="LogRank", pmethod="HL")
# normal approximation
maxstat.test(Surv(month, cens) ~ EF, data=hohnloser,
smethod="LogRank", pmethod="exactGauss")
maxstat.test(Surv(month, cens) ~ EF, data=hohnloser,
smethod="LogRank", pmethod="exactGauss", iscores=TRUE)
# conditional Monte-Carlo
maxstat.test(Surv(month, cens) ~ EF, data=hohnloser,
smethod="LogRank", pmethod="condMC", B = 9999)