search for: orthopaedics

Has anybody written an actuarial (life) survival procedure, this does not appear to be an option in the survival package? This approach is common in orthopaedic surgery to demonstrate the survival of prostheses. I need to apply the "modified" lower conf.int because of the censoring over time. I want a life table which I can then easily plot. Many thanks

Folks, I have a data frame with 4861469 rows that contains an ip address xxx.xxx.xxx.xxx as one of the columns. I want to assign a site to each row based on IP ranges. To do this I have a function to split the ip address as character into class A,B,C and D components. It works but is horribly inefficient in terms of speed. I can't quite see how one of the l/s/m/t/apply functions could be

I had a problem with Samba 2.2.5 with the printers being permanantly paused to Windows machines. They could print OK - it was only the status that was wrong. The reason for this was because I had used the word office in the printer name / comment. This was causing the parser which recognises the printer status to find 'off' pausing the printer. A quick fix for this is to replace the

In the following code the arrow symbols do not rotate with the text on the Mac OS window, however the do rotate on X11 port on Mac OS. (R version 1.71) x <- c(0,10.) y <- c(0,10.) offset <- 3 centre <- 5 plot(x,y, xlim=range(x), ylim=range(y),type="n", xlab="",ylab="", main="",xaxt="n",yaxt="n") for (i in (seq(0, 340,

...l knee replacement. While a Grade III tear may or may not require surgery, a Grade I or II never does! we've studied it well over the years and have grown accustomed to knowing just how much to expect out of ourselves. David Trotter is Board Certified and a Diplomate of the American Academy of Orthopaedics Surgeons. having both knees done at the same time is also riskier than one at a time. it simply shows its head in more areas of our lives than we normally think to look. it's with us everyday, pulsing and flowing. Her lateral compartment was normal. This book will be extremely useful to anyone...

...l knee replacement. While a Grade III tear may or may not require surgery, a Grade I or II never does! we've studied it well over the years and have grown accustomed to knowing just how much to expect out of ourselves. David Trotter is Board Certified and a Diplomate of the American Academy of Orthopaedics Surgeons. having both knees done at the same time is also riskier than one at a time. it simply shows its head in more areas of our lives than we normally think to look. it's with us everyday, pulsing and flowing. Her lateral compartment was normal. This book will be extremely useful to anyone...

Hi, Please, is out there anybody using RMySQL under Mac OS X? I'm trying to build it without much success. How must I add/locate mysql.h and lmysqlclient library? Thanks for your help, Ricardo -- Ricardo Rodr?guez Your EPEC ICT Team

A recent thread has hinted on slow performances on large directories (thousands of entries) on the ext2/3 filesystem. I appreciate that the answer is to store these directories on a different file system or to reorganise the way you store the files into subdirectories. I'd just like to ask has anyone done any tests to determine approximately what the limit is before slowdown occurs.

Hello there, I've produced a modified version of the smbprint script that comes with the samba source. The script is aimed to retry sending the print job if the windows machine is switched off at the time of printing (samba seems to just drop the print job after a period of time if the machine is off). This script will mail you to tell you the machine isn't turned on yet and if you

...n, k=2, scale="odds") spl the code "plot(spl)" produces a red spline which is difficult for me to interpret. I would like to plot survival based on for example age or rx. Thanks in advance for your help in this matter Best Regards Maziar Mohaddes MD, PhD student Department of Orthopaedics Sahlgrenska University Hospital SE-431 80 Mölndal, Sweden [[alternative HTML version deleted]]

Dear Subscribers, I am using R for quite a while nowadays on Ubuntu 10.04 LTS. I a using R for doing my statistics. Furthermore I am using it as a tool to generate the graphics for my publications. I am currently working on a project which involves nls-fits of three dimensional surfaces such as ellipsoids or even more complex. I have been searching R help and the manuals for a possibility to

Hi fans, i tryed to use samba to share a paradox database which comes with a special trade programs. On a novell server it works fine. But on the samba share I get a corrupted database after some minutes of multi user access. I've tryed some entries in the smb.conf and I think a have a very conservative setting now. I heared of somebody who uses samba successfully with the same application

Hi folks, I recently upgraded two client/server pairs to WinXP and Samba 2.2.6 (on Linux). Browsing mounted shares causes hangs when right-clicking or double-clicking/ launching files -- about 15 seconds. During this, precious little network activity is occuring. Something is hanging, locking, sleeping. Appreciate any advice. Hope it's a simple fix. If not, I'd appreciate advice on

Hello there. I'm having a few problems using samba 2.2.3a and sharing a paradox database. On the whole everything works fine but (there's always a but), every now and again. a machine's shares will close causing the database to crash (sometimes only that machine) - the other networked machine recover after a few error messages. I guess the easy answer would be to disable oplocks

Hi I would like to analyse an ordinal categorical variable. I know how I can analyse a nominal categorical variable (with multinom or if there are only two levels with glm). Does somebody know which command I need in R to analyse an ordinal categorical variable? I want to describe the variable y with the variables x1,x2,x3 and x4. So my model looks like: y ~ x1+x2+x3+x4. y: ordinal factor

Hi, If I have: foo <- survfit(y ~ x) where y is a survival object and x is a n-level factor. The documentation says when I plot(foo), the confidence intervals will not be plotted (which I guess is understandable as otherwise the plot will get really messy). I tried to plot with confidence intervals by using: plot(foo, conf.int = TRUE) and indeed the resulting plot is messy. However

Dear All, I've been using R for windows for a while, without too many problems. However, I'm forced to use the MAC OS system for teaching, because our teaching labs are mac only (not my idea!!). I have a very basic problem, but one that doesn't appear on the FAQs. I simply want to import data from a spreadsheet. I'm using exactly what works fine on Windows, namely: 1 save

Hi, I am out of town and will get back to you on the 13th of July. Leo >>> "r-help at stat.math.ethz.ch" 06/27/03 00:32 >>> Send R-help mailing list submissions to r-help at stat.math.ethz.ch To subscribe or unsubscribe via the World Wide Web, visit https://www.stat.math.ethz.ch/mailman/listinfo/r-help or, via email, send a message with subject or body