Displaying 14 results from an estimated 14 matches for "ulcer".
2011 Apr 29
1
Use nparcomp function from nparcomp library to run post hoc
Dear list,
I tried to use the nparcomp to run some post hoc non-parametric comparison
and got and error.
Error in uniroot(pfct, interval = interval) :
f() values at end points not of opposite sign
Appreciate any comments.
the command line:
>nparcomp(Ulceration~Group,data=test,type='Dunnett',control='Non-treated')
Jun
===================================================================
data as follows
structure(list(Group = c("Duoderm", "Duoderm", "Duoderm", "Duoderm",
"Duoderm", &qu...
2018 Mar 18
1
selectFGR - variable selection in fine gray model for competing risks
...to use factor variable in 'selectFGR' function. The following R code is produced below for reproducibility.
library(riskRegression)
library(pec)
dat <-data(Melanoma,package="riskRegression")
Melanoma$logthick <- log(Melanoma$thick)
f1 <- Hist(time,status)~age+sex+epicel+ulcer
df1 <-FGR(f1,cause=1, data=Melanoma)
df1
df <-selectFGR(f1, data=Melanoma, rule ="BIC", direction="backward")
Thanks in advice for your suggestion. Is there any alternative solution ?
Regards
Amalraj raja
The University of Aberdeen is a charity registered in Scotland,...
2010 Sep 07
0
AHRQ - Creation of Comorbidity Variables
...with id and one element per cc
# dimnames = c('ID',
# 'CHF','VALVE','PULMCIRC','PERIVASC',
# 'HTN_C','PARA','NEURO','CHRNLUNG','DM',
# 'DMCX','HYPOTHY','RENLFAIL','LIVER','ULCER',
# 'AIDS','LYMPH','METS','TUMOR','ARTH',
# 'ANEMDEF','ALCOHOL','DRUG','PSYCH','DEPRESS') )
flag = function(data, k) {
data = data[k, ]
print(data)
print(k)
id = as.matrix(data[1])
DX =...
2015 Feb 05
1
lost at 'repository' entry installing centos7
On 02/02/2015 03:15 PM, Tim wrote:
> What are you exactly searching for?
Sounds like he is doing a network install, and is looking for the network
path that must be supplied in order to do the install. If he doesn't have
a local repository, then he has to supply the first part of the path (e.g.
http://..../xyz/ ) and he has to stop at the directory level above .../7/
or some such. I
2007 Jun 28
0
WEIBULL FRAILTY MODEL HELP
...-c(500000,2.8,.5,1.8)
# initial 1/exp(constant)
t<-nlm(likelihood.weibul,initial,print.level=1,hessian=T)
Best Regards,
Denis Lalountas
University of Patras
insem<-read.table("Melanoma.txt",header=T)
id <- insem$id
timeto<-insem$time
stat<-insem$status
x1<-insem$ulcer
x2 <-insem$thickness
x2 <- log(x2)
id time status sex age year thickness ulcer
1 1 10 0 1 76 1972 6.76 1
2 2 30 0 1 56 1968 0.65 0
3 3 35 0 1 41 1977 1.34 0
4 4 99 0 0 71 1968 2.90 0
5 5 185...
2008 Jan 25
2
Help Me to Adjust the R Code
...nty using R 2.6.0 on Windows XP.
It also works for me using R 1.2.1 and S-PLUS 2000 on Windows XP after installing the S-PLUS bootstrap library, with slight differences in my outputs.
> library(boot)
> library(survival)
> set.seed(12345)
> mel <- melanoma[melanoma$ulcer==1,]
> mel$cens <- 1*(mel$status==1)
> mel.cox <- coxph(Surv(time, status==1)~thickness,
+ data=mel)
> mel.surv <- survfit(mel.cox)
> mel.cens <- survfit(Surv(time-0.001*(status==1),status!=1)~1,
+ data=mel)
> mel.fun <- function(d) {
+ cox <- coxph(...
2018 Mar 21
1
selectFGR vs weighted coxph for internal validation and calibration curve- competing risks model
...ectFGR' function. The following R code is
> produced below for reproducibility.
>
> library(riskRegression)
> library(pec)
> dat <-data(Melanoma,package="riskRegression")
> Melanoma$logthick <- log(Melanoma$thick)
> f1 <- Hist(time,status)~age+sex+epicel+ulcer
> df1 <-FGR(f1,cause=1, data=Melanoma)
> df1
> df <-selectFGR(f1, data=Melanoma, rule ="BIC", direction="backward")
>
> Thanks in advice for your suggestion. Is there any alternative solution ?
>
> Regards
> Amalraj raja
>
>
> The Universi...
2010 Oct 13
5
Poisson Regression
Hello everyone,
I wanted to ask if there is an R-package to fit the following Poisson
regression model
log(\lambda_{ijk}) = \phi_{i} + \alpha_{j} + \beta_{k}
i=1,\cdots,N (subjects)
j=0,1 (two levels)
k=0,1 (two levels)
treating the \phi_{i} as nuinsance parameters.
Thank you very much
--
-Tony
[[alternative HTML version deleted]]
1998 Dec 14
1
Shadow passwords
Dear samba-list!
I just upgraded our linux-file server from the last samba version
(1.19.-something??) to the 2.0beta3 since the speed-up effect seemed
worth a try. I did this over the weekend to keep our network functional
workdays...
But now I've seen that only me can write and read properly from the
different shares. The other users (I set up user level security as
before) have some
2018 Mar 21
0
selectFGR - variable selection in fine gray model for competing risks
...ectFGR' function. The following R code is
> produced below for reproducibility.
>
> library(riskRegression)
> library(pec)
> dat <-data(Melanoma,package="riskRegression")
> Melanoma$logthick <- log(Melanoma$thick)
> f1 <- Hist(time,status)~age+sex+epicel+ulcer
> df1 <-FGR(f1,cause=1, data=Melanoma)
> df1
> df <-selectFGR(f1, data=Melanoma, rule ="BIC", direction="backward")
>
> Thanks in advice for your suggestion. Is there any alternative solution ?
>
> Regards
> Amalraj raja
>
>
> The Universi...
2008 Jan 26
0
Who can tell me how I adjust the R code for bootstrapping the Cox model?
...ty using R 2.6.0 on Windows XP.
It also works for me using R 1.2.1 and S-PLUS 2000 on Windows XP after installing the S-PLUS bootstrap library, with slight differences in my outputs.
> library(boot)
> library(survival)
> set.seed(12345)
> mel <- melanoma[melanoma$ulcer==1,]
> mel$cens <- 1*(mel$status==1)
> mel.cox <- coxph(Surv(time, status==1)~thickness,
+ data=mel)
> mel.surv <- survfit(mel.cox)
> mel.cens <- survfit(Surv(time-0.001*(status==1),status!=1)~1,
+ data=mel)
> mel.fun <- function(d) {
+ cox <- coxph(...
2008 Jan 25
0
Please help me
...ty using R 2.6.0 on Windows XP.
It also works for me using R 1.2.1 and S-PLUS 2000 on Windows XP after installing the S-PLUS bootstrap library, with slight differences in my outputs.
> library(boot)
> library(survival)
> set.seed(12345)
> mel <- melanoma[melanoma$ulcer==1,]
> mel$cens <- 1*(mel$status==1)
> mel.cox <- coxph(Surv(time, status==1)~thickness,
+ data=mel)
> mel.surv <- survfit(mel.cox)
> mel.cens <- survfit(Surv(time-0.001*(status==1),status!=1)~1,
+ data=mel)
> mel.fun <- function(d) {
+ cox <- coxph(...
2008 Jan 26
1
(no subject)
...ty using R 2.6.0 on Windows XP.
It also works for me using R 1.2.1 and S-PLUS 2000 on Windows XP after installing the S-PLUS bootstrap library, with slight differences in my outputs.
> library(boot)
> library(survival)
> set.seed(12345)
> mel <- melanoma[melanoma$ulcer==1,]
> mel$cens <- 1*(mel$status==1)
> mel.cox <- coxph(Surv(time, status==1)~thickness,
+ data=mel)
> mel.surv <- survfit(mel.cox)
> mel.cens <- survfit(Surv(time-0.001*(status==1),status!=1)~1,
+ data=mel)
> mel.fun <- function(d) {
+ cox <- coxph(...
2018 Jul 11
3
RFC: Speculative Load Hardening (a Spectre variant #1 mitigation)
FYI to all: I've updated the design document to include the newly disclosed
variants 1.1 and 1.2 (collectively called Bounds Check Bypass Store or
BCBS).
There is no change to the proposed implementation which can already
robustly mitigate these variants.
I've also updated my patch as we have very significant interest in getting
at least an early "beta" version of this into the