[R] Fitting survival trees with competing risk

any R package for this fit? Thank you very much in advance. Mario Petretta Mario Petretta, MD, FAHA Professor of Internal Medicine Department of Translational Medical Sciences Naples University "F

[R] R: forest plot metafor

Many tanks to Wolfgang Viechtbauer for his time and help. The suggested code works very well Mario Petretta. __ Message: 11 Date: Sat, 12 Dec 2015 17:22:20 +0100 From: "Viechtbauer Wolfgang (STAT)"

[R] R: forest plot metafor

frame. However, I again ask: Using: forest(res, showweights=TRUE) it is possible to directly order the columns, simply placing the weights after effect size and CI? Sincerely Mario Petretta -Messaggio originale- Da: Michael Dewey [mailto:li...@dewey.myzen.co.uk] Inviato: venerdì

[R] forest plot metafor

le: data.bcg)? Thanks for your attention ____ Mario Petretta Professor of Internal Medicine Department of Translational Medical Science Naples University “Federico II” - Italy _ <http://www.avast.com/> Questa e-mail è priva di virus e malware perché è

[R] R: help with metasens

Obviously metafor and not metaphor. Sorry Mario [[alternative HTML version deleted]] __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http

[R] R: help with metasens

>Q d.f. p.value > 240.64 19 < 0.0001 > > Details on meta-analytical method: > - Inverse variance method > - DerSimonian-Laird estimator for tau^2 > >> cop1<-copas(meta1) > > Warning in sqrt(solve(junk2$hessian + 1e-08)[1, 1]) : > NaN was produced > >> plot (

[R] help with metasens

cop1<-copas(meta1) Warning in sqrt(solve(junk2$hessian + 1e-08)[1, 1]) : NaN was produced plot (cop1) ERROR: object "is.relative.effect" not found --- Mario Petretta Associate Professor of Internal Medicine Department of Trans

Re: [R] Comparing summary hazard ratios in meta-analysis

lings either way. I suppose I was thinking of cases I have seen where either injudicious rounding or typos has meant that it was better to start from scratch. [Show Quoted Text - 122 lines][Nascondi Testo quotato] Best, Wolfgang -Original Message- From: Mario Petretta [mailto: &

[R] R: Comparing summary hazard ratios in meta-analysis

Petretta; r-help@r-project.org Oggetto: RE: [R] Comparing summary hazard ratios in meta-analysis Those hazard ratios and CIs seem a bit strange. On the log-scale, they should be symmetric, but they are not. Could be due to heavy rounding though. At any rate, it comes down to this: hr<- c(3

[R] Comparing summary hazard ratios in meta-analysis

: HR 1.25 (95% CI 1.03 - 2.6) It is possible or I'm comparing apples with oranges? Any suggestion is welcome. --- Mario Petretta Associate Professor of Internal Medicine Department of Translational Medical Sciences Naples University Federi

[R] 3D scatterplot and agreement among three methods in the same subject

ed in this example. Any suggestion is welcome. --- Mario Petretta Associate Professor of Internal Medicine Department of Translational Medical Sciences Naples University Federico II Italy __ R-help@r-p

[R] how to change the order of subgroups in forest plot using meta

subgroups in the forest plot using the package meta? Any suggestion is welcome. Mario Petretta Department of Translational Medical Sciences Naples University Federico II Italy __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help

[R] R: interpreting weight in meta-analysis of proportion

Fine ! Many many thanks! Mario -Messaggio originale- Da: Bernd Weiss [mailto:bernd.we...@uni-koeln.de] Inviato: venerdì 18 aprile 2014 15.58 A: petre...@unina.it; R-help@r-project.org Oggetto: Re: [R] interpreting weight in meta-analysis of proportion On 18.04.2014 13:02, petre...@uni

Re: [R] interpreting weight in meta-analysis of proportion

of the absolute weight, other than the relative weight, or at least the absolute value of the sum of the weights. Sincerely Mario Petretta >Department of Translational Medical Sciences >Naples University Federico II >Italy > Message: 2 Date: Thu, 17 Apr 2014 12:43:06 +0100 From: Michae

[R] interpreting weight in meta-analysis of proportion

eree ask a brief explanation of the W-statistic reported in the results, in particular, why the summ of the individual weights of all the studies is 100%. Any suggestion is welcome. -- Mario Petretta Department of Translational Medical Sciences Naples University F

[R] merge two forest plot in one graph with meta package

metaCMD, fontsize=12, squaresize=0.6, just.studlab="left", leftcols="studlab", rightcols="effect") but it do not works Thanks for your attention Mario Petretta Department of Translational Medical Science Naples University "

[R] metafor escalc(measure="SMCC")

Many thanks to Wolfgang Wiechtbauer for the explanation. Sincerely Mario Petretta Message: 31 Date: Thu, 21 Nov 2013 19:08:14 +0100 From: "Viechtbauer Wolfgang (STAT)" To: "petre...@unina.it" , "r-help@r-project.org" Subject: Re: [R

[R] metafor escalc(measure="SMCC")

further explanation on this point? Sorry for the trouble Sincerely Mario Petretta Department of Translational Medical Sciences Naples University Federico II Italy > Message: 50 Date: Tue, 19 Nov 2013 11:48:33 +0100 From: "Viechtbauer Wolfgang (STAT)" To: "petr

[R] metafor escalc(measure="SMCC")

3 Zhu 2013 8 0 00.18 0.05 0 3.1975 0.7640 Sincerely -- Mario Petretta Department of Translational Medical Sciences Naples University Federico II Italy __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE

Re: [R] meta-analysis of annualized event rate (Michael Dewey)

Many thanks to Michael Dewey for the kindly replay. escalc (and metafor) works well !! -- Mario Petretta Department of Translational Medical Sciences Naples University Federico II Italy Michael Dewey ha scritto: At 18:51 11/09/2013, petre...@unina.it wrote: r-help@r-project.org Dear all

[R] meta-analysis of annualized event rate

% person-year) I would like suggestions on package(s) and code. Many thanks in advance. -- Mario Petretta Department of Translational Medical Sciences Naples University Federico II Italy __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman

Re: [R] R: net reclassification index after Cox survival analysis

opinion, a standardization (or a consensus statement or a position paper)for this technique seems highly desirable as the NRI is currently used in an increasing number of medical research paper dealing with time-to-event data and censored observation. Sincerely Mario Petretta Dpt Internal Medicine

Re: [R] R: net reclassification index after Cox survival analysis

>>> ???. Doesn't its name , 'rcorrp.cens' suggest otherwise? Not to mention >>> its description int the Hmisc Index: "Rank Correlation for Paired >>> Predictors with a Possibly Censored Response, and Integrated >>> Discrimination Index&q

Re: [R] R: net reclassification index after Cox survival analysis

ing different. The argument list you list looks like the one for improveProb(), which does not appear to handle censoring. The rcorrp.cens argument list is: rcorrp.cens(x1, x2, S, outx=FALSE, method=1) And the "S" object is a Surv-object. Many thanks. Sincerely, Mario Petretta

[R] R: net reclassification index after Cox survival analysis

the function of Package ‘Hmisc’[#rcorrp.cens(x1, x2, y) ##] is only for no censored observations. Many thanks. Sincerely, Mario Petretta Dpt. Internal Medicine, Cardiology and Heart Surgery Naples University Federico II - Italy __ R-help@r-project.org

[R] Extrapolating Cox predicted risk

an exponential distribution? Any help would be greatly appreciated. Thanks for your consideration. Mario Petretta Dipartimento di Medicina Clinica Scienze Cardiovascolari e Immunologiche Facoltà di Medicina e Chirurgia Università di Napoli Federico II 081 - 7462233

[R] Subject: Re: Problems with R Commander version 1.8-3

"dotTclObjv", objv, PACKAGE = "tcltk"), class = "tclObj") : [tcl] list element in braces followed by "{"MS" instead of space. With version 1.7-2 the process go well and I have no problem ! Can I have help? Many thanks in advance. Mario

[R] Problems with R Commander version 1.8-3

warning message is: Error in structure(.External("dotTclObjv", objv, PACKAGE = "tcltk"), class = "tclObj") : [tcl] list element in braces followed by "{"MS" instead of space. With version 1.7-2 the process go well and I have no problem ! Can I have he

[R] Help Metafor

  alloc.b    -0.3656   0.5529  -0.6613  0.5084    -1.4493    0.7180   Year    0.0673   0.0273   2.4677  0.0136 0.0139    0.1208  * Many thanks _ Mario Petretta Dipartimento di Medicina Clinica Scienze Cardiovascolari e Immunologiche Fa

[R] Metafor package

. it is possible to return a forest plot with the backtransformed value of proportion, confidenc interval and weight and not with the transformed value after performing rma.uni? Many thanks Mario Petretta Dipartimento di Medicina Clinica Scienze Cardiovascolari e Immunologiche Facoltà di Medici

[R] HOW to use str() after the survivalROC (or another library in R) to get optimal cut-off values

NOT only the 5 values listed above in the example in order to to get optimal cut-off values Thank you very much! Mario Petretta Dipartimento di Medicina Clinica Scienze Cardiovascolari e Immunologiche Facoltà di Medicina e Chirurgia Università di Napoli Federico II 081 - 7462233 Mario Pe

[R] HOW to use the survivalROC to get optimal cut-off values?

8 ... $ FP : num [1:313] 1 0.997 0.993 0.99 0.987 ... $ predict.time: num 365 $ Survival: num 0.93 $ AUC : num 0.888 so i dont know how to use the survivalROC to get optimal cut-off values?(only 5