Displaying 20 results from an estimated 3000 matches similar to: "Partial R-square in multiple linear regression"
2013 Feb 01
2
Help calculating p-values
I am trying to figure out how to calculate p-values for the difference in
prevalence of a risk factor between men and women. For example, I find that
277 out of 710 male patients and 125 out of 305 female patients have
obesity, what is the p-value for their difference?
If there is a package that can calculate this in bulk, I would appreciate
to learn about it!
Thank you
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2012 May 05
3
metafor
Dear users of metafor,
I am working on a meta-analysis using the metafor package. I have a
excel csv database that I am working with. I am interested in pooling
the effect measures for a particular subgroup (European women) in this
csv database. I am conducting both sub-group and meta-regression.
In subgroup-analyses, I have stratified the database to create a
separate csv file just for European
2008 Jun 16
1
回复: cch() and coxph() for case-cohort
I tried to compare if cch() and coxph() can generate same result for
same case cohort data
Use the standard data in cch(): nwtco
Since in cch contains the cohort size=4028, while ccoh.data size =1154
after selection, but coxph does not contain info of cohort size=4028.
The rough estimate between coxph() and cch() is same, but the lower
and upper CI and P-value are a little different. Can we
2012 Nov 09
5
using lapply with recode
Hello:
Forgive me, this is surely a simple question but I can't figure it out, having consulted the help archives and "Data Manipulation With R" (Spector).
I have a list of 11 data frames with one common variable in each (prov). I'd like to use lapply to go through and recode one particular level of that common variable.
I can get the recode to work, but it only returns the
2013 May 16
2
R looping help
Hey I'm not really sure what I should put on here, but I am having trouble
with my R code. I am trying to get the p-values, R^2s etc for a number of
different groups of variables that are all in one dataset.
This is the code:
#Stand counter
st<-1
#Collections
stands<-numeric(67)
slopes<-numeric(67)
intercepts<-numeric(67)
mses<-numeric(67)
rsquares<-numeric(67)
2011 Jul 13
1
max possible rsquare
Dear all,
I have a question regarding the output of the coxph function. What does the
'max possible' exactly mean in the output below? Many thanks.
coef exp(coef) se(coef) robust se z Pr(>|z|)
smocc_zyban -0.4384 0.6451 0.8667 0.9473 -0.463 0.644
self 1.1857 3.2728 0.1405 0.1443 8.216 2.22e-16 ***
smocc_zyban:self
2003 Jul 21
1
how to calculate Rsquare
Hi,
I have something like this:
> x <- 1:10
> y2 <- 30+5*x+rnorm(x,sd=3)
> y <- c(y1,y2)
> x <- c(x,x)
> plot(x,y)
> x <- 1:10
> y1 <- 1+5*x+rnorm(x,sd=2)
> y2 <- 30+5*x+rnorm(x,sd=5)
> y <- c(y1,y2)
> x <- c(x,x)
> f <- factor(rep(c("a","b"),c(10,10)))
> m <- lm(y~x+f)
> anova(m)
Analysis of Variance
2012 Sep 09
1
Addition of Eucalyptus to IaaS section
Hello there,
I?m not sure if this is the right mailing list, but I?d like to see if we
can add Eucalyptus to the IaaS page here: http://libvirt.org/apps.html#iaas
Please let me know what is required in order to add us?
Thanks very much,
*_________________________*
*Eric Choi - *Product Marketing
*Eucalyptus Systems*
www.eucalyptus.com
+1 508 348-9778
Follow us on Twitter
2011 Mar 29
4
Simple but elusive - expand back from counts
Dear R-users,
This should be simple but still eludes me:
Given the following
tmp<-as.data.frame(matrix(c(44, 10, "abc", 1, 44, 10, "def", 1, 44, 12,
"abc", 2), 3, 4, byrow=T))
I want to expand the data to the following form:
V1 V2 V3 V4
1 44 10 abc 1
2 44 10 def 1
3 44 12 abc 1
4 44 12 abc 1
The last row of the original df was duplicated the row by the
2005 Feb 22
4
round() - strange results
Hello,
I found that round() does not behave as I expected.
Have you had similar experience as following?
> x<-seq(0.5,10.5,by=1)
> x
[1] 0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5
> round(x)
[1] 0 2 2 4 4 6 6 8 8 10 10
> cbind(x,round(x))
x
[1,] 0.5 0
[2,] 1.5 2
[3,] 2.5 2
[4,] 3.5 4
[5,] 4.5 4
[6,] 5.5 6
[7,] 6.5 6
2013 Jun 18
2
offset en bucle
Amigos de la erre.
He creado mi primer bucle con for para entrenar unos modelos con GAM. La
respuesta es quasipoisson porque estoy trabajando con densidades de peces.
Sin embargo, tengo un problema, no se muy bien como añadir el offset a la
formula siguiente cuando creo el bucle.
GAM.A1 <-gam ((DYO)~s(DMA,k=4)+ s(WOD,k=4)+s(CIN,k=4)+s(DRA,k=4)+s(DBR,k=4)
2005 Jul 13
3
How to increase memory for R on Soliars 10 with 16GB and 64bit R
Dear all,
My machine is SUN Java Workstation 2100 with 2 AMD Opteron CPUs and 16GB RAM.
R is compiled as 64bit by using SUN compilers.
I trying to fit quantile smoothing on my data and I got an message as below.
> fit1<-rqss(z1~qss(cbind(x,y),lambda=la1),tau=t1)
Error in as.matrix.csr(diag(n)) : cannot allocate memory block of size 2496135168
The lengths of vector x and y are
2006 Mar 15
1
filtering in aggregate
Hello all,
I have a data frame with year, month, species, fishing gear and catch
(Y, M, S, F, C) and I want the sum of C by Y for species "A" and fishing
gear "trawl".
I tried things like aggregate(C[S=="A" & F=="trawl"], list (Year =
Y[S=="A" & F=="trawl"]), fun=sum), but it didn't worked.
To overcome this problem I did
2010 Jul 23
2
re-ordering bwplot
Dear list:
I'm using bwplot to compare concentrations by location and treatment as in:
# using built in data
bwplot( conc ~ Type : Treatment, data = CO2 )
I would like the order of the plots to be: 3,4,1,2. I can't seem to figure this out with index.cond or permc.cond.
Any help is appreciated!
Brad Eck
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2008 May 02
1
A horizontal or vertical line draw on mosaic plot?
Hi,
I want to have a horizontal line on a mosaic plot with "vcd" package.
This would give me an idea where is 0.5 proportion in a cell. Using
"mosaicplot" function of "graphics" package, I can draw a line using
"abline." But, with "mosaic" function of "vcd" package, I have tried
to use "abline" function, which complains
2012 Aug 06
1
cannot find function "simpleRDA2"
Hi,
I am trying to run the command "forward.sel.par," however I receive
the error message: "Error: could not find function 'simpleRDA2'." I
have the vegan library loaded. The documentation on "varpart" has not
helped me to understand why I cannot call this function. Maybe I am
missing something obvious because I am still an 'R' novice.
Below is a
2011 Jan 30
5
How to relocate $HOME directory
Hi there,
As you know, $HOME is generally located at "/home/$username" by default.
I would like to re-locate all users' $HOME directories to something like
"/export/home/$username" without having a hassle/trouble.
Initially, I've thought of just copying them to the new directory (under
/export/home/xxx), but guessed it might trouble for the normal use (I'm
pretty
2016 Sep 16
2
SCEV cannot compute the trip count of Simple loop
> On Sep 16, 2016, at 2:23 PM, Sanjoy Das <sanjoy at playingwithpointers.com> wrote:
>
> Hi Mehdi,
>
> Mehdi Amini wrote:
> >
> >> On Sep 16, 2016, at 1:56 PM, Kevin Choi via llvm-dev
> >> <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote:
> >>
> >> > int mat[9][9][9];
> >> > for (p =
2019 May 07
2
RegAlloc Q: spill when implicit-def physreg is also the output reg of instruction
Hi Quentin,
MyInst is a custom instruction that has implicit-defs of fixed
registers. The implicit-defs are seen at the end of Instruction Selection.
I'd like to add a report, but I am working on an out-of-tree backend
based on 7.0. I can try to help reduce the testcase down.
Filed https://bugs.llvm.org/show_bug.cgi?id=41790
Regards,
Kevin
On 2019-05-07 3:45 p.m., Quentin Colombet wrote:
2010 Apr 09
5
Read data in sequences
Dear R users,
I tried to find a solution in the search list, but I cannot find it. I would
like to read a .txt file with, let say, three variables, with two of which
have repeated values in a number a columns.
An example:
The variables: Treat, x1, x2.
The values:
A 2.5 3.4 2.7 5.6 5.7 5.4 10.1 9.4 ...
B 5.3 5.4 6.5 7.5 1.3 4.5 10.5 4.1 ...
...
In the first column, the letters represent the