Displaying 20 results from an estimated 4000 matches similar to: "Re gression using age and Duration of disease as a continous factors"
2011 May 26
2
matching by gender and age
Hello R gurus, I have a data set from which i have to extract the gender and
age matched rows from controls and disease group
disease<-paste(rep(c('y','n'),11))
gender<-paste(rep(c('m','f'),11))
mcp<-rnorm(700,1400)
age<-rnorm(32,34)
dat<-data.frame(disease=disease,sex=gender,Dr_age=age[1:22],MCP=mcp[1:22])
I have other categorical variables also to
2009 Oct 28
5
re gression with multiple dependent variables?
i have a series of regressions i need to run where everything is the same
except for the dependent variable, e.g.:
lm(y1 ~ x1+x2+x3+x4+x5, data=data)
lm(y2 ~ x1+x2+x3+x4+x5, data=data)
lm(y3 ~ x1+x2+x3+x4+x5, data=data)
is it possible to run all these regs with a single command? given that the
bulk of the work for linear regressions is inverting a matrix that depends
only on the independent
2009 Sep 01
1
Re gression - cluster option in STATA
Hello
In STATA there is command which has regression with clustering option. Can
anyone tell me what is the command for the same in R
for example in STATA
its regress Height Weight, cluster(id)
Thanks in Advance
Regards
Sunita
--
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2009 Jul 20
1
Re gression for loop test HELP! URGENT!
Hi everyone!
I'm new to R, and I'm stuck on a problem I don't know how to approach.
I have calculated a regression in the form of M ~ D + O + S, and I would
like to take this regression and test it with other samples, 5 at a time(5
meaning 5 set, each consisting M, D, O, and S of a specific date). I assume
I'll need a for loop. Right now, My data of M, D, O, and S are all stored in
2003 Jul 26
1
A model for disease progression
I would be grateful for advice about the following problem. It's not
directly R-related, but I'm hoping that R will help me analyse the
following data.
I have a table which indicates the progression of a certain age-related
disease. At a certain point in time, a population was sampled; and I have
measurements for the age of each individual, and their disease stage.
(Disease stage is an
How to plot 2 continous variables on double y-axis with 2 factors: ggplot2, gplot, lattice, sciplot?
2013 Feb 25
3
How to plot 2 continous variables on double y-axis with 2 factors: ggplot2, gplot, lattice, sciplot?
Hi,
I have a data set with two continous variables that I want to plot MEANS (I
am not intrerested in median values) on a double-y graph. I also have 2
factors. I want the factor combinations plotted in different panes.
Dummy dataset:
mydata <- data.frame(factor1 = factor(rep(LETTERS[1:3], each = 40)),
factor2 = factor(rep(c(1:4), each = 10)),
y1 =
2009 Sep 22
2
Semi continous variable- define bounds using lpsolve
How to define bounds for a semi continous variable in lp_solve.
Min 5x1 +9x2 +7.15x3 +0.1x4
subject to
x1+x2+x3+x4=6.7
x1+x4 <= 6.5
And x3 can be 0 or greater than 3.6
hence x3 is a semi continous variable
how to define bounds as well as semicontinous function because using
set.semicont and set. bound simantaneously doesn't seem to work.Thanks in
advance for the help
--
View this
2005 Feb 25
1
how to produce disease maps
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2010 Oct 20
4
How to select not continous rows?
Hello
How can I select several not continuous rows ?
If I wanted to select rows 1 to 7 I'll write
mydata[,1:7]
But what if I need to select rows 1 to 5 and 10 to 15?
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2011 Mar 17
5
Spatial cluster analysis of continous outcome variable
Dear R Users, R Core
Team,
I have a two dimensional space where I measure a numerical value in two situations at different points. I have measured the change and I would like to test if there are areas in this 2D-space where there is a different amount of change (no change, increase, decrease). I don´t know if it´s better to analyse the data just with the coordinates or if its better to group them
2009 May 04
1
mosaic plot with two factors and one continous variable
Hello,
my dataset is already aggregated: I have two categorical variables, say
"continent" and "country" and one non-negative metric variable "population".
Now I would like to produce a mosaic plot which uses "population" to
determine how large each area of the plot is.
In other words, I fail to find out
- how to use the mosaic function of the vcd package
2010 Jan 28
10
Anyone successfully setup Continous Backup of mailboxes using rsync ?
Hi All..
Am working on continous backup of mailboxes using rsync(for e.g by running rsync every 2 min)
Things gets more complicated when users create Subfolders in INBOX , SENT , etc..
If anyone among you did that plz guide & advise.
Thanks
CoolAtt
_________________________________________________________________
Your E-mail and More On-the-Go. Get Windows Live Hotmail Free.
2008 Aug 06
1
Correlation dichotomous factor, continous (numerical) and ordered factor
Hello R-User!
I appologise in advance if this should also go into statistics but I am
presently puzzled.
I have a data.frame (about 300 rows and about 80 variables) and my variables
are dichotomous factors, continuous (numerical) and ordered factors.
I would like to calculate the linear correlation between every pair of my
variables, because I would like to perform a logistic regression (glm())
2008 Feb 13
1
Modelling disease spread
I was at a lecture the other day and I saw a presentation of very neat
(short) animation modeling epidemic disease spread over a map region. When I
ask what software they used they mentioned SAS. Do you know if there are
equivalent resources in R to model the spread of disease with animation
output? My search in R-help and google didn't lead to any document (though I
found a couple of
2014 Jan 13
3
[Bug 73563] New: Continous output of "nouveau E[ DRM] DDC responded, but no EDID for VGA-1"
https://bugs.freedesktop.org/show_bug.cgi?id=73563
Priority: medium
Bug ID: 73563
Assignee: nouveau at lists.freedesktop.org
Summary: Continous output of "nouveau E[ DRM] DDC
responded, but no EDID for VGA-1"
QA Contact: xorg-team at lists.x.org
Severity: normal
Classification: Unclassified
2013 Aug 28
1
can you please give guidance for generating future prediction values from existing heart disease data
Hi
can you please give guidance for generating future prediction values from
existing heart disease data and we want to know the which type of models
are using for generating the future prediction. can you please tell me how
can i write the formula for future predictive values.
can you see the following attachment and send me solution for that
problem.....
--
Thanks and Regards,
Bala Chand
2005 Sep 27
1
Producing empirical bayes estimates in disease mapping for lognormal model
I'm trying to produce empirical bayes estimates based on the lognormal
model in disease mapping
Is there a way this can be done in R?
thanks
Oarabile
2007 Nov 25
1
Problem for creating continous streaming and viwing in a webpage
Hi guys
I'm using Icecast , Ezstream for creating my Webtv for creating a
continuos streaming of some files
In the filename filed of Ezstream xml configuration i put a simple m3u
playlist.
My problems begin when ezstream begin to encode and stream the second file:
If a use a system player , like Vlc or totem , the stream it's continous
, if I use a web player like Cortado or Itheora
2007 Nov 25
1
Problem for creating continous streaming and viwing in a webpage
Hi guys
I'm using Icecast , Ezstream for creating my Webtv for creating a
continuos streaming of some files
In the filename filed of Ezstream xml configuration i put a simple m3u
playlist.
My problems begin when ezstream begin to encode and stream the second file:
If a use a system player , like Vlc or totem , the stream it's continous
, if I use a web player like Cortado or Itheora
2009 Jun 17
2
Re gression by groups questions
I have a large dataset grouped by a factor and I want to perform a regression
on each data subset based on this factor. There are many ways to do this,
posted here and elsewhere. I have tried several. However I found one method
posted on the R wiki which works exactly as I want, and I like the elegance
and simplicity of the solution, but I don't understand how it works. Its
all in the formula