Dear R users,
Please can you help me with a relatively straightforward problem that I
am struggling with? I am simply trying to plot a baseline survivor and
hazard function for a simple data set of lung cancer survival where
`futime' is follow up time in months and status is 1=dead and 0=alive.
Using the survival package:
lung.wbs <- survreg( Surv(futime, status)~ 1, data=lung, dist='weibull')
plot (lung.wbs)
Returns the error msg:
Error in xy.coords(x, y, xlabel, ylabel, log) : x and y lengths differ
Using the Design package:
lung.wbd <- psm (Surv (futime, status)~ 1, dist="weibull", data=lung,
na.action=na.omit)
You don't need to specify na.action here.
survplot(lung.wbd)
Returns the error msg:
Error in survplot.Design(lung.wbd) : fit does not have design
information
survplot only works when there is at least one covariate. Sorry. Maybe someday ...
-Frank Harrell
Regards,
Eric Lim
Papworth Hospital
Cambridge, UK
-- Frank E Harrell Jr Professor and Chair School of Medicine Department of Biostatistics Vanderbilt University
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