search for: logexact

Displaying 6 results from an estimated 6 matches for "logexact".

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2002 Feb 19
1
exact confidence intervals for conditional logistic regression
Dear R folks, We completed a matched case-control study that was analyzed using conditional logistic regression. Because of the small sample size we need to calculate exact confidence intervals. The quick solution is to purchase LogExact by Cytel. However, we'd like to do this in R. Anyone have experience with this? Many thanks, Tomas ____________________________________ Tomas Aragon, MD, DrPH, Director Com Health Epidemiology & Disease Control San Francisco Department of Public Health Tel: (415) 554-2724, Fax: (415) 554-2...
2009 Jun 23
1
implementing Maximum Likelihood with distrMod when only the PDF is known
...tribution")), contains="Parameter" ) ##Class: distribution (created using the pdf of the skew normal defined above) setClass("SkewNorm",prototype = prototype( d = function(x, log = FALSE){fsn(x, mu=0, sd=1,d=0)}, param = new("SkewNormParameter"), .logExact = TRUE,.lowerExact = TRUE), contains = "AbscontDistribution" ) #so far so good but then with setMethod("mu", "SkewNormParameter", function(object) object at mu) #I get the following error message: > Error in setMethod("mu", "SkewNormParameter&quot...
2008 Nov 07
0
clogit and small sample sizes: what to do?
...ng message was posted to this list: -----old post 2002------------ Dear R folks, We completed a matched case-control study that was analyzed using conditional logistic regression. Because of the small sample size we need to calculate exact confidence intervals. The quick solution is to purchase LogExact by Cytel. However, we'd like to do this in R. Anyone have experience with this? Many thanks, Tomas ____________________________________ Tomas Aragon, MD, DrPH -----old post 2002 end------------ At that time, the answers were not too encouraging. Anyway, I might have the very same query 200...
2017 Aug 26
0
Find maxima of a function
> On 26 Aug 2017, at 16:39, niharika singhal <niharikasinghal1990 at gmail.com> wrote: > > Hi, > > Thanks for your mail, and time > > It is not working for some arguments, when mean value is like >6. > > > case > > mc0 <- c(0.08844446,0.1744455,0.1379778,0.1209769,0.1573065,0. > 1134463,0.2074027) > > rv
2017 Aug 26
1
Fwd: Find maxima of a function
Hi, Thanks for your mail, and time It is not working for some arguments, when mean value is like >6. case mc0 <- c(0.08844446,0.1744455,0.1379778,0.1209769,0.1573065,0. 1134463,0.2074027) rv <-UnivarMixingDistribution(Norm(486.4255, 53.24133), Norm(664.0713, 3.674773), Norm(669.0484, 4.101381),
2017 Aug 27
2
Fwd: Find maxima of a function
.....@ r :function (n) > ..@ d :function (x, log = FALSE) > ..@ p :function (q, lower.tail = TRUE, log.p = FALSE) > ..@ q :function (p, lower.tail = TRUE, log.p = FALSE) > ..@ .withSim : logi FALSE > ..@ .withArith : logi TRUE > ..@ .logExact : logi FALSE > ..@ .lowerExact: logi FALSE > ..@ Symmetry :Formal class 'NoSymmetry' [package "distr"] with 2 slots > .. .. ..@ type : chr "non-symmetric distribution" > .. .. ..@ SymmCenter: NULL > > str(density(rv)) > Error in densi...