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dnopause
2003 Sep 25
1
Diamond graphs, again.
Some time ago I was allowed to discuss "Diamond Graphs", and whether
they would be useful in R, in this mailing list.
The August 2003 issue of The American Statistician has finally arrived
here and I have been able to read the article. A number of points of
interest arise.
1. The article is
"A Diamond-Shaped Equiponderant Graphical Display of the
Effects of Two
2012 Jul 05
0
Confused about multiple imputation with rms or Hmisc packages
...nosis, ord_nodes as an ordinal variable for the # lymph nodes involved.
obj=with(mydata, Surv(recurfree_survival_fromsx,rf_obs_sx))
mod=cph(obj~ord_nodes+Ograde_dx+ERorPR+HER2_Sum,data=mydata,x=T,y=T)
#Impute missing data
mydata.transcan=transcan(~Ograde_dx+tumorsize+ord_nodes+simp_stage_path+afam+
Menopause+Age,imputed=T,n.impute=10)
summary(mydata.transcan)
The issues I have are:
a) In your opinion(s), should I even be imputing this data? Is it appropriate here?
b) Even after reading the help pages and Harrell's book, I'm not sure I used the correct imputation method, and whethe...