Displaying 20 results from an estimated 1000 matches similar to: "poisson.test from stats package does not pass the conf.level (PR#14195)"
2010 Jan 28
0
exactci package gives exact binomial and poisson tests and matching CI
I am announcing the release of the exactci package. It calculates exact tests and confidence intervals for binomial and Poisson tests. Here is an example to motivate the package:
Suppose you want to see if the observed rates of 2/17877 for group A are significantly different from the observed rates of 10/20000 for group B assuming Poisson counts. The poisson.test function in the stats package
2010 Jan 28
0
exactci package gives exact binomial and poisson tests and matching CI
I am announcing the release of the exactci package. It calculates exact tests and confidence intervals for binomial and Poisson tests. Here is an example to motivate the package:
Suppose you want to see if the observed rates of 2/17877 for group A are significantly different from the observed rates of 10/20000 for group B assuming Poisson counts. The poisson.test function in the stats package
2007 Jun 06
0
New Package: rateratio.test
Hi,
I just uploaded a new package rateratio.test. The package contains one function of the same name and it performs an exact rate ratio test for Poisson counts. Unlike binom.test and fisher.test the p-values and confidence intervals are internally consistent. In other words, if the p-value implies that the null hypothesis should be rejected, then the confidence interval also implies that the
2007 Jun 06
0
New Package: rateratio.test
Hi,
I just uploaded a new package rateratio.test. The package contains one function of the same name and it performs an exact rate ratio test for Poisson counts. Unlike binom.test and fisher.test the p-values and confidence intervals are internally consistent. In other words, if the p-value implies that the null hypothesis should be rejected, then the confidence interval also implies that the
2013 Jun 05
0
[R-pkgs] bpcp package for pointwise confidence intervals for a survival distribution
Hi all,
I just uploaded a new version of the bpcp package. It calculates confidence intervals for a survival distribution for right-censored data using the newly developed beta product confidence procedure. Previously developed methods can have substantial error rate inflation for the lower limit, especially at the right end of the curves when there are small numbers of events. The bpcp method
2007 Jun 06
0
R package: Mchtest - Monte Carlo hypothesis testing allowing Sequential Stopping
Hi,
This is an announcement for a package that has been up on CRAN since March 2006 but was never announced.
The package is Mchtest - for Monte Carlo hypothesis tests allowing sequential stopping. The idea is to use the sequential probability ratio test boundaries to stop resampling for a Monte Carlo hypothesis test such as a bootstrap or permutation test. This means that you will take many
2007 Jun 06
0
R package: Mchtest - Monte Carlo hypothesis testing allowing Sequential Stopping
Hi,
This is an announcement for a package that has been up on CRAN since March 2006 but was never announced.
The package is Mchtest - for Monte Carlo hypothesis tests allowing sequential stopping. The idea is to use the sequential probability ratio test boundaries to stop resampling for a Monte Carlo hypothesis test such as a bootstrap or permutation test. This means that you will take many
2011 Apr 20
1
possible minor bug in fisher.test
Hi,
I received a bug report for my exact2x2 package that seems to apply to fisher.test in the stats package also.
Here is some code which creates the error:
>x<-factor(c(0,1,1),levels=c(0,1))
> y<-factor(c(1,1,1),levels=c(0,1))
> fisher.test(x,y)
Error in fisher.test(x, y) : 'x' and 'y' must have at least 2 levels
>
The help says that x and y could be
2007 Jun 06
0
R Package: ssanv - Sample size adjustments for nonadherence and variability of input parameters
Hi,
This is a late announcement for a package that has been up on CRAN since Feb 2006.
The package is called ssanv and it calculates sample sizes for two group tests with adjustments for nonadherence and variability of the input parameters. As an example, suppose you want a sample size for a two group difference in normal means but you get your estimate of your variance from a previous study.
2007 Jun 06
0
R Package: ssanv - Sample size adjustments for nonadherence and variability of input parameters
Hi,
This is a late announcement for a package that has been up on CRAN since Feb 2006.
The package is called ssanv and it calculates sample sizes for two group tests with adjustments for nonadherence and variability of the input parameters. As an example, suppose you want a sample size for a two group difference in normal means but you get your estimate of your variance from a previous study.
2009 Jul 20
0
new package: exact2x2
Hi all,
I have just uploaded a new package to the ftp site called exact2x2. The package does exact conditional tests for 2x2 tables. Specifically, it does Fisher's exact test and Blaker's exact test (see Blaker, 2000, Canadian Journal of Statistics, 783-798). The motivation for the package is to have inferences from p-values and confidence intervals match as much as is possible for the
2009 Jul 20
0
new package: exact2x2
Hi all,
I have just uploaded a new package to the ftp site called exact2x2. The package does exact conditional tests for 2x2 tables. Specifically, it does Fisher's exact test and Blaker's exact test (see Blaker, 2000, Canadian Journal of Statistics, 783-798). The motivation for the package is to have inferences from p-values and confidence intervals match as much as is possible for the
2010 Jan 28
0
Update to exact2x2 package: Exact McNemar's test
Hi all,
I have updated the exact2x2 package which calculates exact conditional tests and the matching confidence intervals for 2x2 tables. The big change in the update is to allow the option paired=TRUE which gives an exact McNemar's test together with odds ratio estimates and confidence intervals. See vignette("exactMcNemar") for details.
The original release is described in the
2010 Jan 28
0
Update to exact2x2 package: Exact McNemar's test
Hi all,
I have updated the exact2x2 package which calculates exact conditional tests and the matching confidence intervals for 2x2 tables. The big change in the update is to allow the option paired=TRUE which gives an exact McNemar's test together with odds ratio estimates and confidence intervals. See vignette("exactMcNemar") for details.
The original release is described in the
2010 Feb 04
0
Update of interval package
Hi all,
I have uploaded an update of the interval package, which calculates nonparametric maximum likelihood estimates (NPMLE) of distributions and exact or asymptotic weighted logrank-type tests for interval censored data. An important part of the update is that now the default initial estimate of the NPMLE uses the MLEcens package and is much faster. This increases the speed of the logrank-type
2010 Oct 06
0
update to exact2x2 package
Hi all,
I have updated the exact2x2 package. The update corrects an error that can sometimes occur in the confidence intervals when the number of counts are large and tsmethod="minlike". In addition to fixing the bug, the correction gives a much faster method for calculating the confidence interval.
The package gives exact confidence intervals that match the p-values for Fisher's
2010 Oct 06
0
update to exact2x2 package
Hi all,
I have updated the exact2x2 package. The update corrects an error that can sometimes occur in the confidence intervals when the number of counts are large and tsmethod="minlike". In addition to fixing the bug, the correction gives a much faster method for calculating the confidence interval.
The package gives exact confidence intervals that match the p-values for Fisher's
2010 Feb 04
0
Update of interval package
Hi all,
I have uploaded an update of the interval package, which calculates nonparametric maximum likelihood estimates (NPMLE) of distributions and exact or asymptotic weighted logrank-type tests for interval censored data. An important part of the update is that now the default initial estimate of the NPMLE uses the MLEcens package and is much faster. This increases the speed of the logrank-type
2008 Oct 06
1
splinefun gives incorrect derivs when extrapolating to the left (PR#13132)
This is a low priority bug that has been around for a while, but I came acr=
oss it again while alpha testing 2.8.
The resulting function for splinefun gives incorrect deriv values when x is=
less than the smallest x-value used to create the function (at least in on=
e circumstance), but does the correct thing for x greater than the largest =
x-value.
Here is an example:
> x <- 1:10
>
2007 Sep 12
0
New package: hbim - Hill/Bliss Independence Model for Multicomponent Vaccines
Hi all,
I have just uploaded the hbim package. This package does calculations related to the Hill/Bliss independence model as applied to mulitcomponent vaccines. Specifically, the package caculates expected relative risk and proportion protected assuming normally distributed log10 transformed antibody dose for a several component vaccine. It uses Hill models for each component which are combined