Kaplan Meier estimates of incidence
Compute and plot Kaplan-Meier estimates of the probability that each successive state has not occurred yet.
plotprog.msm(formula, subject, data, legend.pos=NULL, xlab="Time",
ylab="1 - incidence probability", lwd=1, xlim=NULL,
mark.time=TRUE, ...)formula |
A formula giving the vectors containing the observed states and the corresponding observation times. For example,
Observed states should be in the set |
subject |
Vector of subject identification numbers for the data
specified by |
data |
An optional data frame in which the variables represented
by |
legend.pos |
Vector of the x and y position, respectively, of the legend. |
xlab |
x axis label. |
ylab |
y axis label. |
lwd |
Line width. See |
xlim |
x axis limits, e.g. c(0,10) for an axis ranging from 0 to 10. Default is the range of observation times. |
mark.time |
Mark the empirical survival curve at each censoring
point, see |
... |
Other arguments to be passed to the
|
If the data represent observations of the process at arbitrary times, then
the first occurrence of the state in the data will usually be greater
than the actual first transition time to that state. Therefore the
probabilities plotted by plotprog.msm will be
overestimates.
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