Displaying 3 results from an estimated 3 matches for "ngraded2".
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2005 Oct 24
1
Error in step() (or stepAIC) for Cox model
...Error in sort(unique.default(x), na.last = TRUE) :
'x' must be atomic
I figure the reason may be that when stepwise procedure selects the
chosen model with no varibles, that is
Start: AIC= 12436.85
Surv(tlfup, cen) ~ mi$trt + mi$nodes + mi$htypeed1 + mi$htypeed2 +
mi$ngraded2 + mi$agem40 + mi$agem40sq + mi$er + mi$pr
Df AIC
- mi$pr 1 12435
- mi$trt 1 12435
- mi$agem40sq 1 12435
- mi$agem40 1 12435
- mi$htypeed2 1 12435
- mi$nodes 1 12435
- mi$er 1 12436
- mi$ngraded2 1 12436
- mi$htypeed1 1 12436
<none> 1...
2005 Oct 25
0
One more about Error in step() (or stepAIC) for Cox model
...m40sq 1 12338
- MI[[j]]$agem40 1 12339
- mhtypeed2 1 12353
- mhtypeed1 1 12365
There were 50 or more warnings (use warnings() to see the first 50)
Warning messages:
1: X matrix deemed to be singular; variable 8 9 in: coxph(Surv(tlfup,
cen) ~ MI[[j]]$trt + MI[[j]]$nodes + MI[[j]]$ngraded2 + ...
2: X matrix deemed to be singular; variable 7 8 in: coxph(formula =
Surv(tlfup, cen) ~ MI[[j]]$nodes + MI[[j]]$ngraded2 + ...
...
7: X matrix deemed to be singular; variable 7 8 in: coxph(formula =
Surv(tlfup, cen) ~ MI[[j]]$trt + MI[[j]]$nodes + ...
8: X matrix deemed to be singular; v...
2005 Sep 27
0
Help: A application error and failed just-in-debugging.
...ever, no debuggers are registered that can debug this exception.
Unable to JIT debug.
In my program, I first source("sump6d2.q") to get data from splus, and
attach(sump6d2),
Whenever I run this part of program, the error pops up:
library(mix)
Y<-cbind(race2,nodes,htypeed1,htypeed2,ngraded2,blood2,agem40,agem40sq,e
r,pr) #<--Y has to be a matrix for mix
s<-prelim.mix(Y,6)
#----------------------------run multiple
imputation------------------------------#
MI<-vector("list",10) #<--vector of complete data after MI
fit.model.mi<-vector("list",10)
r...