Displaying 4 results from an estimated 4 matches for "metastasis".
2005 Nov 13
1
selection of missing data
Hi i'm a french medical student,
i have some data that i import from excel. My colomn of the datafram
are the localisations of metastasis. If there is a metatsasis there is
the symbol "_". i want to exclude the row without metastasis wich
represent the NA data.
so, i wrote this
mela is the data fram
mela1=ifelse(mela[,c(11:12,14:21,23,24)]=="_",1,0) # selection of the
colomn of metastasis localisation
mela4...
2009 Dec 17
1
Help with Merge - unexpected loss of factor level
...gt; names(tma)
[1] "Code" "marker" "cell" "tumourA" "tumourEXP" "int" "stain" "tumourPERC" "branch"
> levels(tma$tumourA)
[1] "DCIS" "LN Metastasis" "Normal" "Primary Invasive Carcinoma"
#split into cancer and normal tissue
> tma1<-subset(tma, tumourA=="Primary Invasive Carcinoma")
> tma2<-subset(tma, tumourA=="LN Metastasis")
> tmaN<-subset(tm...
2008 Feb 27
2
problem with creation of eSet
...ot;id");
pdN <- list(type =
"Cellline/xenograft",tumor="primary,secondary,cellline",time =
"0hr,1hr,2hr,4hr", id = "1,2,3,4,5,6,7,8,9")
# Initialize exprSet object
pD <- new("phenoData", pData=pd, varLabels=pdN);
# This is my eSet!!!
metastasis.eset <- new("exprSet", exprs=as.matrix(geneExpr.log),
phenoData=pD)
I get the following error:
The phenoData class is deprecated, use AnnotatedDataFrame (with
ExpressionSet) instead
Can someone suggest me how to use the new method AnnotatedDataFrame to create
eSet?...
2010 May 06
1
Understanding of survfit.formula output
...ained.
I have used the following command line to look at number of events and
probability of survival at the first 5 years:
> su = summary(survfit(Surv(a[, Date], a[, Event]) ~ strata(a[,Prediction]),
data = a), times=c(0,1,2,3,4,5))
I have studied two kind of events (disease-free survival and metastasis free
survival), please see the results below.
At year 5, in group C2 I have one more patient with an event when looking at
DFS (13) than when looking at relapse (12). However, the probability is
higher when looking at DFS (0.23) than relapse (0.18), which I cannot
understand as I have one more even...