search for: epidemiologie

...tes in an akward sas format, where 31.12.1559 is -1, 1.1.1960 is 1, 2.1.1960 is 2 and so on (see http://www.sfu.ca/sasdoc/sashtml/lrcon/zenid-63.htm ). Is there any function in R to convert this into YYYY-M-D easily? Best, Felix Dr. rer. nat. Dipl.-Psych. Felix Fischer Institut für Sozialmedizin, Epidemiologie und Gesundheitsökonomie Charité - Universitätsmedizin Berlin Luisenstrasse 57 10117 Berlin Tel: 030 450 529 104 Fax: 030 450 529 902 http://epidemiologie.charite.de<http://epidemiologie.charite.de/> [[alternative HTML version deleted]]

...-0.638 0.4043 0.0467 0.4043 -2.215 -0.5765 -0.137 501 Any hints how to handle this would be appreciated. Best regards, Christine -- Christine Adrion, Dipl.-Stat., MPH Ludwig-Maximilians-Universitaet Muenchen IBE - Institut fuer Medizinische Informations- verarbeitung, Biometrie und Epidemiologie Marchioninistr. 15 D- 81377 Muenchen Tel.: +49 (0)89 7095 - 4483 eMail: adrion@ibe.med.uni-muenchen.de web: http://ibe.web.med.uni-muenchen.de -- View this message in context: http://www.nabble.com/How-to-cut-data-elements-included-in-a-text-line-tp18533319p18533319.html S...

...rib/Descriptions/biopara.html) Are there other possibilities? Are there special groups working on simultaneous computing with R? Thanks Markus -- Dipl.-Tech. Math. Markus Schmidberger Ludwig-Maximilians-Universit?t M?nchen IBE - Institut f?r medizinische Informationsverarbeitung, Biometrie und Epidemiologie

...c(-1,3)) Is there a way to plot the errorbars anyway? Setting xmax to the scale limit is not so good, I guess, because you couldn't determine whether the CI is wider than the scale limits or not. Thanks a lot, Best, Felix Dr. rer. nat. Dipl.-Psych. Felix Fischer Institut für Sozialmedizin, Epidemiologie und Gesundheitsökonomie Charité - Universitätsmedizin Berlin Luisenstrasse 57 10117 Berlin Tel: 030 450 529 104 Fax: 030 450 529 902 http://epidemiologie.charite.de<http://epidemiologie.charite.de/> [[alternative HTML version deleted]]

Hi, I have a vector or random variables and I'm estimating the density using "bkde" function in the KernSmooth package. The out put contains two vectors (x and y), and the R documentation calls y as the density estimates, but my y-values are not exact density etstimates (since these are numbers larger than 1)! what is y here? Is it possible to get the true estimated density at each

...ess the factor/char/numeric-type correctly when reading the table. So, is there any way in drop the unused factor levels from *all* factors of a data frame without import/export ? Thanks in advance, Hilmar -- Hilmar Berger Studienkoordinator Institut f?r medizinische Informatik, Statistik und Epidemiologie Universit?t Leipzig H?rtelstr. 16-18 D-04107 Leipzig Tel. +49 341 97 16 101 Fax. +49 341 97 16 109 email: hilmar.berger at imise.uni-leipzig.de

Hi All, I am trying to lable the y-axis on my scatterplot with the following: "Soil moisture content (m3m-3)" I am using the following coding for plotting the graph: plot(soilmoisture~gradientlevel, xlab="Levels of droughting gradient", ylab="Soil moisture content (m3m-3)", bty="l", font.main="2", pch=16, las=1, cex.lab="1.13") I have

...know I could set NA or NULL as default values and check for these, but there are reasons I want to have legal default values for all arguments. Best regards, Andreas Andreas Borg Medizinische Informatik UNIVERSIT?TSMEDIZIN der Johannes Gutenberg-Universit?t Institut f?r Medizinische Biometrie, Epidemiologie und Informatik Obere Zahlbacher Stra?e 69, 55131 Mainz www.imbei.uni-mainz.de Telefon +49 (0) 6131 175062 E-Mail: borg at imbei.uni-mainz.de Diese E-Mail enth?lt vertrauliche und/oder rechtlich gesch?tzte Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrt?mlich erhalt...

I am tryindo to do a very simple thing but cannont find how to do it anywhere. I need to formap part of my title as subscript ans superscript. How can I do it? Thanks a lot in advance José -- MSc José Alberto F. Monteiro Botanisches Institut Universität Basel [[alternative HTML version deleted]]

Hello, is there a R package that provides a log rank trend test for survival data in >=3 treatment groups? Or are there any comparable trend tests for survival data in R? Thanks a lot Markus -- Dipl. Inf. Markus Kreuz Universitaet Leipzig Institut fuer medizinische Informatik, Statistik und Epidemiologie (IMISE) Haertelstr. 16-18 D-04107 Leipzig Tel. +49 341 97 16 276 Fax. +49 341 97 16 109 email: markus.kreuz at imise.uni-leipzig.de

Hey all, In order to test if a marker is a risk factor, I built two models (using cox proportional hazard model). One model included this marker, and the other is not. Then, I use R package risksetROC to test how much predictive value did the marker add to this model. I get two C statistics by analyzing the linear predictors of the two models into this package. The qustion is How to test if two

...{RecLinkData,RecLinkData}(x, y) Any idea what is wrong? I have seen this behaviour with R 2.12.0 and 2.12.1. Best regards and thanks for any suggestion, Andreas -- Andreas Borg Medizinische Informatik UNIVERSIT?TSMEDIZIN der Johannes Gutenberg-Universit?t Institut f?r Medizinische Biometrie, Epidemiologie und Informatik Obere Zahlbacher Stra?e 69, 55131 Mainz www.imbei.uni-mainz.de Telefon +49 (0) 6131 175062 E-Mail: borg at imbei.uni-mainz.de Diese E-Mail enth?lt vertrauliche und/oder rechtlich gesch?tzte Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrt?mlich erhalt...

Hello! I would like to do some tables for several variables and I would like to write a loop that does the table for each variable. I should also point out that my data set has several missing observations and sometimes the observations that are missing are not the same for all my variables. What I would like to do: table(StoreData$CompanyID, !is.na(StoreData$P2))

...nnected. The function approx interpolates the whole dataset. Thats not my goal! Is there no plotting function to do this directly? Best Markus -- Dipl.-Tech. Math. Markus Schmidberger Ludwig-Maximilians-Universit?t M?nchen IBE - Institut f?r medizinische Informationsverarbeitung, Biometrie und Epidemiologie Marchioninistr. 15, D-81377 Muenchen URL: http://ibe.web.med.uni-muenchen.de Mail: Markus.Schmidberger [at] ibe.med.uni-muenchen.de

...aded into R but into a SQLite database to which I connect via RSQLite. I would like to have these object in a seperate library. Thanks and kind regards, Andreas -- Andreas Borg Medizinische Informatik UNIVERSIT?TSMEDIZIN der Johannes Gutenberg-Universit?t Institut f?r Medizinische Biometrie, Epidemiologie und Informatik Obere Zahlbacher Stra?e 69, 55131 Mainz www.imbei.uni-mainz.de Telefon +49 (0) 6131 175062 E-Mail: borg at imbei.uni-mainz.de Diese E-Mail enth?lt vertrauliche und/oder rechtlich gesch?tzte Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrt?mlich erhalt...

Hi, i want to construct a data set similar to "AirPassengers". Its attributes are following. > attributes(AirPassengers) $tsp [1] 1949.000 1960.917 12.000 $class [1] "ts" How Can I construct a data set similar to it having same class and attributes. Thanks -- Amar Kumar Nandan ?:nandan.amar at gmail.com http://aknandan.co.nr

...linux-gnu system i686, linux-gnu status major 1 minor 9.0 year 2004 month 04 day 12 language R R> _______________________________________________________________________ | | | Dr. rer. nat. Torsten Hothorn | | Institut fuer Medizininformatik, Biometrie und Epidemiologie | | Waldstrasse 6, D-91054 Erlangen, Deutschland | | Tel: ++49-9131-85-22707 (dienstl.) | | Fax: ++49-9131-85-25740 | | Email: Torsten.Hothorn@rzmail.uni-erlangen.de | | PLEASE send emails cc to torsten@hothorn.de | | Web: http://www.imbe.med.uni-erlangen.de/~hothorn | |______...

...this variable in my C function? Is the communicator variable somewhere stored in a R variable? ( I use R 2.6.2 and Rmpi 0.5-5) Thanks Markus -- Dipl.-Tech. Math. Markus Schmidberger Ludwig-Maximilians-Universit?t M?nchen IBE - Institut f?r medizinische Informationsverarbeitung, Biometrie und Epidemiologie Marchioninistr. 15, D-81377 Muenchen URL: http://ibe.web.med.uni-muenchen.de Mail: Markus.Schmidberger [at] ibe.med.uni-muenchen.de Tel: +49 (089) 7095 - 4599

Hi, I'm using read.table in a loop, to read in multiple files. The problem is that when a file is missing there is an error message and the loop is broken; what I'd like to do is to test for the error and simply do "next" instead of breaking the loop. Anybody knows how to do that? Example: filelist <- c("file1.txt", "file2.txt",

I noticed that the text() command adds text to a plot. Is there a way to either make the plot blank or add text to a "blank sheet". I would like to "plot" a page that contains just text, no plot lines, labels, etc. Suggestions? Kevin [[alternative HTML version deleted]]