Displaying 20 results from an estimated 1000 matches similar to: "Is there any design based two proportions z test?"
2024 Jan 17
1
Is there any design based two proportions z test?
Dear Md Kamruzzaman,
To answer your second question first, you could just use the svychisq()
function. The difference-of-proportion test is equivalent to a chisquare
test for the 2-by-2 table.
You don't say how you computed the confidence intervals for the two
separate proportions, but if you have their standard errors (and if not,
you should be able to infer them from the confidence
2024 Jan 17
1
Is there any design based two proportions z test?
Hello Everyone,
I was analysing big survey data using survey packages on RStudio. Survey
package allows survey data analysis with the design effect.The survey
package included functions for all other statistical analysis except
two-proportion z tests.
I was trying to calculate the difference in prevalence of Diabetes and
Prediabetes between the year 2011 and 2017 (with 95%CI). I was able to
2023 Nov 03
1
[EXTERNAL] RE: I need to create new variables based on two numeric variables and one dichotomize conditional category variables.
Yes, that will halve the number of multiplications.
If you?re looking for such optimisations then you can also consider ifelse(G=='male', 65L, 58L). That will definitely use less time & memory if WC is integer, but the trade-offs are more complicated if WC is floating point.
Regards,
Jorgen Harmse.
From: avi.e.gross at gmail.com <avi.e.gross at gmail.com>
Date: Friday,
2023 Nov 03
2
I need to create new variables based on two numeric variables and one dichotomize conditional category variables.
Just a minor point in the suggested solution:
df$LAP <- with(df, ifelse(G=='male', (WC-65)*TG, (WC-58)*TG))
since WC and TG are not conditional, would this be a slight improvement?
df$LAP <- with(df, TG*(WC - ifelse(G=='male', 65, 58)))
-----Original Message-----
From: R-help <r-help-bounces at r-project.org> On Behalf Of Jorgen Harmse via
R-help
Sent: Friday,
2023 Nov 03
1
I need to create new variables based on two numeric variables and one dichotomize conditional category variables.
Well, something like:
LAP <- ifelse(gender =='male', (WC-65)*TG, (WC-58)*TG)
The exact code depends on whether your variables are in a data frame or
list or whatever, which you failed to specify. If so, ?with may be useful.
Cheers,
Bert
On Fri, Nov 3, 2023 at 3:43?AM Md. Kamruzzaman <mkzaman.m at gmail.com> wrote:
> Hello Everyone,
> I have three variables: Waist
2023 Nov 03
1
I need to create new variables based on two numeric variables and one dichotomize conditional category variables.
df$LAP <- with(df, ifelse(G=='male', (WC-65)*TG, (WC-58)*TG))
That will do both calculations and merge the two vectors appropriately. It will use extra memory, but it should be much faster than a 'for' loop.
Regards,
Jorgen Harmse.
------------------------------
Message: 8
Date: Fri, 3 Nov 2023 11:10:49 +1030
From: "Md. Kamruzzaman" <mkzaman.m at gmail.com>
2009 Feb 26
1
error message and convergence issues in fitting glmer in package lme4
I'm resending this message because I did not include a subject line in my first posting.
Apologies for the inconvenience!
Tanja
> Hello,
>
> I'm trying to fit a generalized linear mixed model to estimate diabetes prevalence at US county level. To do this I'm using the glmer() function in package lme4. I can fit relatively simple models (i.e. few covariates) but when
2023 Nov 03
1
I need to create new variables based on two numeric variables and one dichotomize conditional category variables.
Hello Everyone,
I have three variables: Waist circumference (WC), serum triglyceride (TG)
level and gender. Waist circumference and serum triglyceride is numeric and
gender (male and female) is categorical. From these three variables, I want
to calculate the "Lipid Accumulation Product (LAP) Index". The equation to
calculate LAP is different for male and females. I am giving both
2007 Jun 26
2
Aggregation of data frame with calculations of proportions
Dear all,
I have been stuck on this problem, am rather struggling and would
appreciate some advice if anyone can help. I apologise if this is a
bit long-winded, but I've tried to limit it to the bare essentials,
but don't know how to make it more generic!
I have some slightly odd real world data that I'm looking at
representing number of positive diagnoses for different diseases,
2009 Feb 26
1
(no subject)
Hello,
I'm trying to fit a generalized linear mixed model to estimate diabetes prevalence at US county level. To do this I'm using the glmer() function in package lme4. I can fit relatively simple models (i.e. few covariates) but when expanding the number of covariates I usually encounter the following error message.
gm8 <-
2008 Jan 02
6
problem when editing record in polymorphic relation
I have the following three models created applying the polymorphic
concept
==========================================================================
class SoftwareCi < ActiveRecord::Base
has_one :ci, :as => :content
end
class HardwareCi < ActiveRecord::Base
has_one :ci, :as => :content
end
class Ci < ActiveRecord::Base
belongs_to :content, :polymorphic => true
end
The
2006 Jun 15
2
download.file() yields incomplete files with method="internal"
Dear all,
as the bug # 7991 is flagged not-reproducible, let me give you some pieces
of code, as I have the same or similar problem. The problem always shows up
with the first example (a small text file) and only sometimes (but without
obvious pattern) with the second example, which is a binary file.
> download.file("ftp://ftp.nhc.noaa.gov/pub/atcf/btk/bal012006.dat",
2009 Nov 27
2
layers in xYplot of Hmisc
In the "filled bands" part of xYplot of the Hmisc package, is there a way to
have multiple bands with multiple lines? or does it just allow one for now?
So I had an example bit ago had a made up line and CI, now if I wanted to
make a second line with a CI filled in can I put them on the same plot?
x<-seq(1,10,1)
y<-seq(1,10,1)
ci<-y*.10
ciupper<-y+ci
2002 Jun 06
2
R correlations.
Hi, anybody have any ideas on this ?
I have two sequences of proportions. Due to
conventions in my field, I need to produce a linear
correlation between the two. Each sequence of
proportions are based upon differing numbers of
observations (although within a sequence the number of
observations may not fluctuate too much) so it may be
necessary/advisable to variance stabilize. Is their a
best
2011 Jun 16
2
Bayesian Credible Intervals for a Proportion
I am trying to calculate Bayesian Credible Intervals for a proportion
(disease prevalence values to be more specific) and am having trouble using
R to do this. I am working with ncredint() function but have not had success
with it. Please help!
Example:
Positive samples = 3
Total sampled = 10
Prevalence = 0.3
pvec <- seq(1,10,by=1)
npost = dbinom(pvec,10,prob=0.3, log=FALSE)
ncredint(pvec,
2012 Aug 28
1
R Download 'Permission Denied'
Hello,
I am receiving a 'Permission Denied' error when trying to use the R Download
funtion.
I am wondering if this is a:
- Error in the code
- Permissions issue at source
- Permissions issue at destination.
If you could shed any light on this it would be very much appreciated, below
is a sample of the code.
Code
2011 Jul 26
4
[LLVMdev] How to get the return address on the stack on LLVM
Hi all,
I want to implement the Xor random canary, so I have to get the return
address in the prologue and epilogue of the function.
In the prologue of the function, before I insert into the canary on
the stack, I can get the return address by:
ConstantInt* ci =
llvm::ConstantInt::get(Type::getInt32Ty(RI->getContext()), 0);
Value* Args1[] = {ci};
CallInst* callInst =
2006 Feb 01
1
several plots in one
Can anyone tell me how I can supply more than one graph to plotCI
(gplots) at once?
Below is what I tried, also with rbind instead of cbind.
What is the way to do this (in general, I think)?
Problem is that lines of 1-st and 2-nd series are mixed, while they have
nothing to do with each other.
I also tried calling plotCI with argument add=TRUE, which didn't seem to
work (that is actually
2007 May 26
0
Centos - 4.x - VAIO notebook heating up
Hi friends,
I have a problem i have VAIO VGN-F seies notebook which was performing slow
on main power source, working fine on battery i did some tweaks on CPU
speeds reading a lot of tutorials , i do not know whether this or somthing
else has now started making mine notebook got heated up , i mean it is
heatin up from base.
I also have windows on the same system (dual boot), it was also heating
2011 Jul 26
0
[LLVMdev] How to get the return address on the stack on LLVM
On 7/26/11 5:37 PM, Xueying ZHANG wrote:
> Hi John,
>
> Thanks for your reply!
I'm CC'ing this to the list in case anyone knows why you're seeing this
behavior.
>
> Now, I know the different between llvm.returnaddress(0) and
> llvm.returnaddress(1). I modify the StackPortector.cpp and I just want
> to get value of the return address stored on the stack.
>