similar to: shrout & fleiss ICC´s with varying numbers of judges

Hello Everyone I am calculating Fleiss Kappa, I have 28 raters, 5 Subjects and 5 ratings. The problem is that there are 2 missing values in the data. Would it better to replace those with "0" or should those be omitted? By omission I will be left wit only 3 subjects. and my second problem is that overall agreement comes to zero, whereas the data is not showing agreement to be close

Hi All, I am using fleiss kappa for inter rater agreement. Are there any know issues with Fleiss kappa calculation in R? Even when I supply mock data with total agreement among the raters I do not get a kappa value of 1. instead I am getting negative values. I am using the irr package version 0.70 Any help is much appreciated. Thanks and Regards M [[alternative HTML version deleted]]

Thanks to Justin, Baptiste, and Sebed for your answers. The solutions work well. I have been putting them to good use today: the code now works wonderfully and I learnt some useful tricks! thanks, Peter <-----Original Message-----> >From: justin bem [justin_bem@yahoo.fr] >Sent: 9/8/2009 9:06:23 AM >To: heltertwo@care2.com >Cc: r-help@stat.math.ethz.ch >Subject: Re: Re :

Hello, R-folks: Here is a statement I use to make a data frame: iccdata <- data.frame(i=rep(1:10,rep(2,10)),j=rep(1:2,10), x=c(0.35011,0.11989,0.13081,0.09919,0.16000,0.12000,0.00000,0.00000, 0.44023,0.32977,2.67081,2.63919,0.09050,0.03950,0.44019,0.30981,0.59000, 0.57000,4.03000,3.77000)) Then here are the data: > iccdata i j x 1 1 1 0.35011 2 1 2 0.11989 3 2 1 0.13081 4

Dear R-colleagues, I am quite a newbie to R fighting my stupidity to solve a probably quite simple problem of generating artificial data with defined features. I am conducting a study of inter-observer-agreement in child-bronchoscopy. One of the most important measures is Kappa according to Fleiss, which is very comfortable available in R through the irr-package. Unfortunately medical doctors

hi I don't have experience at all with networks but I was triyng to install and configure tinc as a platform for multiplayer games that need to be run on a LAN. The computers run with Windows XP so I followed the example posted in the website for installation in windows. Everything is pretty clear and step-by-step, but when trying to generate the keys I get the following message: Cannot open

I am using a "for" loop to read a table row by row and I have to specify how many records are there in the table. I need to read row by row because the table is huge and the memory not large enough for the whole table.: number.of.records=100 fp=file("abc.csv","r") pos=seek(fp, rw="read") for (i in 1:number.of.record){ current.row=scan(file=fp,

Hello, Does anyone how enable the sFTP logging? I have a solaris 9 on sun blade 2500 SSh Version: ssh -V SSH Version Sun_SSH_1.0.1, protocol versions 1.5/2.0. Whats all that mean? This link shows how to get the sftp logging with chroot path. http://sftplogging.sourceforge.net/download/README -------------------- Install instructions: -------------------- 1. download and expand openssh-3.x(.x)px

Hi, I want to estimate a model of the following form: y = a1W1y + X1beta1 + e e = a2W2e + X2beta2 + nu with y a vector of proportions or counts and W a matrix of weights. In other words, autocorrelation occurs for the response variable y and for the disturbance term e. Ideally, at either level multiple W matrices could be included and X1 and X2 could be (partly) different (or X2 could be

I have an array called "stocks" which contains numeric dates, ticker symbols,prices, etc. > stocks[1:3,] DATE TICKER PERMNO EXCHCD TSYMBOL TRDSTAT SHROUT PRC RET 1 19950131 EWST 10001 3 EWST A 2224 -7.75000 -0.031250 2 19950228 EWST 10001 3 EWST A 2224 7.54688 -0.026210 3 19950331 EWST

Hi, Sorry,after i install bridging 1.4, even after i setup a new bridge to link between wlan0 & eth 0 but it seem lost after pc restart, i have to reset after restart. am i doing wrong in installation or ... Hope get some advice from u all (expert) ===== Ô¸ÄúÓÀÔ¶ÐÒ¸££¬¿ìÀֺͰ²Ïê Happy & Healthy Always ! ^_^ ! ¸öÈËÍøÒ³ Homepage:http://planet.time.net.my/sunwaycity/ceyong ¸öÈË·ðѧÍøÒ³

The irr package seems to install correctly: > install.packages("irr") trying URL 'http://cran.us.r-project.org/src/contrib/irr_0.61.tar.gz' Content type 'application/x-tar' length 13848 bytes opened URL ================================================== downloaded 13Kb * Installing *source* package 'irr' ... ** R ** data ** help >>>

R-2.9.1, Windows7 Dear list, I have a question to you that seems very simple to me, but I just can't figure it out. I have a dataframe called "ratings" which contains the following variables: evalR1, evalR2, evalR3, evalR4, scoreR1, scoreR2, scoreR3, scoreR4, opinionR1, opinionR2, opinionR3, opinionR4. (there are more variables, but this gives an idea of the data structure). What

Hi, I added below code in /etc/rc.d/rc.local in order to load the bridge brctl addbr br0 brctl addif br0 eth0 brctl addif br0 wlan0 ifconfig br0 up but it fail, i found error in /var/log/message said localhost: modprobe: modprobe cannot locate br0 modules but i found it said suceedly up the br0 interface anyone know? ===== Ô¸ÄúÓÀÔ¶ÐÒ¸££¬¿ìÀֺͰ²Ïê Happy & Healthy Always ! ^_^ !

Hi, i am using bridge-utils-1.0.4 in my redhat 9.0 pc, even i configure my bridge called br0 which bridging wlan0 & eth0 but after computer restart, it disapprear, how can we statically set it. I did write configuration and save as ifcfg-br0 . Anyone can help, Thanks! ===== Happy and Healthy Always ! ^_^ ! My Homepage : http://planet.time.net.my/sunwaycity/ceyong My Buddhist Pages:

Dear R-colleagues, this is a question from a R-newbie medical doctor: I am evaluating data on inter-observer-reliability in endoscopy. 20 medical doctors judged 42 videos filling out a multiple choice survey for each video. The overall-data is organized in a classical way: observations (items from the multiple choice survey) as columns, each case (identified by the two columns "number of

Hello, I have 50 raters and 180 cases which are rated as malignant, probably malignant, probably benign, and benign. I want to compare all the raters but I want a weighted kappa to penalize differences between malignant and benign more than differences between malignant and probably malignant. I only found the weighted option in the 2-rater functions (kappa2, wkappa, cohen.kappa). The

A new package, ridittools, is available on CRAN Description: Functions to compute ridit scores of vectors, compute mean ridits and their standard errors for vectors compared to a reference vector,as described in Fleiss (1981, ISBN:0-471-06428-9), and compute means/SEs for multiple groups in matrices. Data can be either counts or proportions. Emphasis is on ridit analysis of ordered categorical

A new package, ridittools, is available on CRAN Description: Functions to compute ridit scores of vectors, compute mean ridits and their standard errors for vectors compared to a reference vector,as described in Fleiss (1981, ISBN:0-471-06428-9), and compute means/SEs for multiple groups in matrices. Data can be either counts or proportions. Emphasis is on ridit analysis of ordered categorical

R Experts: I am conducting a meta-analysis where the effect measures to be pooled are simple proportions. For example, consider this data from Fleiss/Levin/Paik's Statistical methods for rates and proportions (2003, p189) on smokers: Study N Event P(Event) 1 86 83 0.965 2 93 90 0.968 3 136 129 0.949 4 82 70 0.854 Total