Displaying 18 results from an estimated 18 matches for "arterial".
2012 Mar 01
1
Need help using Melt and cast to compute correlation for a cross tabulation
I have a data frame with a number of observed and predicted values by
classification as shown below:
Count Volume FCLASS
1 55000 60000 Grade Separated
2 43000 39000 Grade Separated
3 26000 26500 Major Arterial
4 19500 20000 Major Arterial
...
There are four classes here: Grade Separated, Major Arterial, Minor
Arterial, and Collector
I am looking to compute the following information
FCLASS cor(Count,Volume)
Grade Separated 0.999
Major Arterial 0.999
Minor Arterial...
2010 Sep 27
1
Issues with Legend symbols
Hello forum!
I am currently having trouble getting R to recognize one of my pch
characters. Here's what I have:
legend(120, 40, c("SAL-arterial", "SAL-portal", "GLP-1-arterial",
"GLP-1-portal"), bty="n", col=c("black"), pch=19:15:21:22, pt.bg="white",
pt.cex=2:2:2:2, lty=1, lwd=2, text.col="black", cex=1.3)
Now, SAL-arterial and SAL-portal should be a black circle...
2010 Jun 13
1
Break in the y-axis
...L, 0, 30L, 45L, 60L, 80L,
110L,140L,200L, 260L, 320L), Average =
c(119.250,118.750,117.500,132.75,151.875,159.75,142.75,160,168,167.125,143),SEM=c(2.211,2.569,2.665,5.435146394,6.208741369,8.363550657,8.51349469,14.30284687,15.93865792,16.76541326,13.796)),
.Names = c("Time (min)", "Arterial Plasma Glucose (?g/mL)", "SEM"), class =
"data.frame", row.names = c("1", "2","3", "4", "5", "6", "7", "8", "9",
"10", "11"))
Ex <- structure(list(Time = c(-20L...
2019 Nov 20
3
Datos longitudinales
Buenos días,
Soy Cristian Rodelo y quería haceros una pregunta.
Tengo un conjunto de datos en los que a un grupo de sujetos se les realizaron medidas de tensión arterial a lo largo de 24 horas. En promedio 4 determinaciones horarias. Es decir que cada sujeto se le realizaron 4 determinaciones horarias durante 24 horas.
Bien, quiero determinar la trayectoria longitudinal de las mediciones de acuerdo con identificación de grupos que tengan una trayectoria diferente...
2015 Jun 02
2
information.gain de la libreria FSelector
...nviado el:* ?martes?, ?02? de ?junio? de ?2015 ?10?:?26? ?a.m.
> *Para:* R-help-es en r-project.org <r-help-es en r-project.org>
>
> Hola,
> estoy intentando calcular la ganancia de información para una serie de
> variables (series temporales con distinta longuitud, ej: Presion Arterial,
> Frecuencia cardíaca,...) en relación con una variable binaria (0:paciente
> no muere; 1:paciente muere). Para ello voy a usar la función
> information.gain de la libreria FSelector.
>
> Sabeis si es posible calcular la ganancia de información para variables que
> tienen distint...
2015 Jun 02
2
information.gain de la libreria FSelector
Hola,
estoy intentando calcular la ganancia de información para una serie de
variables (series temporales con distinta longuitud, ej: Presion Arterial,
Frecuencia cardíaca,...) en relación con una variable binaria (0:paciente
no muere; 1:paciente muere). Para ello voy a usar la función
information.gain de la libreria FSelector.
Sabeis si es posible calcular la ganancia de información para variables que
tienen distinta longuitud?? es que en el ej...
2010 Jun 05
1
Error Bar Issues
...typed in to get my error bars.
plotCI(x=Saline [,1],y=Saline [,2], uiw=Saline [,3], liw=uiw, err=y, pch=21,
pt.bg=par("bg"), cex=1.5, lty=1, type="o", gap=0, sfrac=0.005,
xlim=c(-21,340),xaxp=c(-20,320,11), xlab="Time (min)", ylim=c(0,12),
yaxp=c(0,12,11), ylab="Arterial Plasma Acetaminophen (?g/mL)", las=1,
font.lab=2, add=TRUE)
And this is the error message I keep getting
Error in plotCI(x = Saline[, 1], y = Saline[, 2], uiw = Saline[, 3], liw =
uiw, :
object 'uiw' not found
In addition: Warning message:
In if (err == "y") z <- y el...
2003 Sep 22
0
Last call: Asterisk BoF in Boston, Tuesday 23rd
Hello -
The final schedule for the Asterisk birds-of-a-feather meeting (as
an adjunct to the VON conference) in Boston looks like this:
Tuesday, September 23rd at 8:15 at VinnyT's of Boston near the Hynes
Convention Center.
We'll try to get a corner booth in the "downstairs room", and look
for the guy wearing the blue button-down shirt with VON logos on the
breast pocket
2005 Sep 08
4
Prediction with multiple zeros in the dependent variable
I have a batch of data in each line of data contains three values,
calcium score, age, and sex. I would like to predict calcium scores as a
function of age and sex, i.e. calcium=f(age,sex). Unfortunately the
calcium scorers have a very "ugly distribution". There are multiple
zeros, and multiple values between 300 and 600. There are no values
between zero and 300. Needless to say, the
2006 Dec 14
4
Help With Installation to USB Stick
Recently, I was able to create a workable Centos 4.4 "Live USB" on my 1G Lexar Firefly pendrive using the steps in http://linux.web.psi.ch/livecd/usbdisk.html. At the moment, it is doing its job, so I probably won't focus too much more on it. One thing that is annoying, although doesn't cause a problem is that on powerdown and reboot, the cd rom drive ejects - of course, there
2009 Aug 13
0
dcemri: A package for medical image analysis
...nd feedback is appreciated.
Functionality includes:
Motion correction and co-registration via "fast template matching"
T1 quantification via multiple flip-angle acquistions (inversion recovery
coming soon!)
Conversion to gadolinium contrast agent concentration
Parametric models for the arterial input function (AIF), both
literature-based (Tofts-Kermode and Fritz-Hansen) and data-adaptive.
Kinetic parameter estimation using a variety of compartmental models
(e.g., Kety, extended Kety, etc.)
Estimation via nonlinear regression (Levenburg-Marquardt optimization) or
Bayesian methods (MCMC)...
2003 Sep 25
0
LME problem
I am analyzing data on a study of the effects of Coronary Artery Bypass
Graft (CABG) on cognitive function, as measured by a score from an
objective test. I have 140 people who receive the CABG surgery and 92
controls, with four measurements of cognitive function over time (at 0,
3, 12 and 36 months). I have fitted a linear mixed model using lme with
a random intercept for subject and a random
2006 Sep 22
1
Propensity score and three treatments
Dear All,
I would like to find something ( references, code,..) to implement a
comparison of three
treatments in an observational study using the 'Propensity Score'.
Any help is much appreciated. Thanks!
Giovanni
--
dr. Giovanni Parrinello
Department of Biotecnologies
Medical Statistics Unit
University of Brescia
Viale Europa, 11 25123 Brescia
email: parrinel at med.unibs.it
Phone:
2007 Feb 14
1
how to report logistic regression results
Dear all,
I am comparing logistic regression models to evaluate if one predictor
explains additional variance that is not yet explained by another predictor.
As far as I understand Baron and Li describe how to do this, but my question
is now: how do I report this in an article? Can anyone recommend a
particular article that shows a concrete example of how the results from te
following simple
2009 Aug 13
0
dcemri: A package for medical image analysis
...nd feedback is appreciated.
Functionality includes:
Motion correction and co-registration via "fast template matching"
T1 quantification via multiple flip-angle acquistions (inversion recovery
coming soon!)
Conversion to gadolinium contrast agent concentration
Parametric models for the arterial input function (AIF), both
literature-based (Tofts-Kermode and Fritz-Hansen) and data-adaptive.
Kinetic parameter estimation using a variety of compartmental models
(e.g., Kety, extended Kety, etc.)
Estimation via nonlinear regression (Levenburg-Marquardt optimization) or
Bayesian methods (MCMC)...
1998 Jan 26
0
DOS style 8.3 filename mangling issues??!
Okay, I've run through all of the tests in the DIAGNOSE, which my 1.9.18p1 SAMBA
server (and NT4SP3/W95 clients) pass with flying colours.
server box: Linux 2.0.33, gcc 2.7.2.2, libc 5.4.33, shadow, quota on (usr+grp),
and my smb.conf is summarised (by testparm output) below:
Problem is this: with respect to programs not long filename-aware/compliant,
users cannot "double-click" on
2007 Apr 03
2
CentOS 4.5 ?
Hello,
I've checked the ML, but I don't find anything related to CentOS 4.5 (4U5)
(missed it ?)
Does the 4.5 will be out these days, or will it be released after the CentOS
5 ?
Thanks,
Pierre Bourgin
2007 Jan 29
3
tool to manage a PKI
Hello,
this is a little bit off-topic (even if it have to work on CentOS ;-)
I'm looking for a tool to manage a small Public Key Infrastructure, with
creation/revocation of certificates X.509, export in PKCS#12 format and
have the ability to handle CSR (Certificate Signing Request).
I've wrote my own script to perform it (openssl command line based):
it's a good way to