lifetab
From KMsurv v0.15
by Jun Yan
Create cohort life table
Create cohort life table.
 Keywords
 manip
Usage
lifetab(tis, ninit, nlost, nevent)
Arguments
 tis
 a vector of end points of time intervals, whose length is 1 greater than nlost and nevent.
 ninit
 the number of subjects initially entering the study.
 nlost
 a vector of the number of individuals lost follow or withdrawn alive for whatever reason.
 nevent
 a vector of the number of individuals who experienced the event
Value

A data.frame with the following columns:
 nsubs
 the number of subject entering the intervals who have not experienced the event.
 nlost
 the number of individuals lost follow or withdrawn alive for whatever reason.
 nrisk
 the estimated number of individuals at risk of experiencing the event.
 nevent
 the number of individuals who experienced the event.
 surv
 the estimated survival function at the start of the intervals.
 the estimated probability density function at the midpoint of the intervals.
 hazard
 the estimated hazard rate at the midpoint of the intervals.
 se.surv
 the estimated standard deviation of survival at the beginning of the intervals.
 se.pdf
 the estimated standard deviation of the prbability density function at the midpoint of the intervals.
 se.hazard
 the estimated standard deviation of the hazard function at the midpoint of the intervals The row.names are the intervals.
Examples
tis < c(0, 2, 3, 5, 7, 11, 17, 25, 37, 53, NA)
nsubs < c(927, 848, 774, 649, 565, 449, 296, 186, 112, 27)
nlost < c(2, 3, 6, 9, 7, 5, 3, rep(0, 3))
nevent < c(77, 71, 119, 75, 109, 148, 107, 74, 85, 27)
lifetab(tis, nsubs[1], nlost, nevent)
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