search for: drph

Displaying 12 results from an estimated 12 matches for "drph".

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2010 Oct 10
2
GC verbose=false still showing report
...trigger (Mb) max used (Mb) Ncells 267097 14.3 531268 28.4 531268 28.4 Vcells 429302 3.3 20829406 159.0 55923977 426.7 I'm embedding this in an Sweave/TeX file, so I *really* can't have this printing out. Suggestions other than manually editing the TeX file? Robin Jeffries MS, DrPH Candidate Department of Biostatistics UCLA 530-624-0428
2012 Aug 15
3
Subsetting with missing data
...$y) [1] "numeric" "vector" Instead of only pulling the rows where a$y==0, i'm getting where they're 0, OR NA. ? Again I feel like either something was changed when I wasn't looking.. or I'm reaaaaaaly forgetting something important. Thanks, Robin Jeffries MS, DrPH Candidate Department of Biostatistics, UCLA 530-633-STAT(7828) rjeffries@ucla.edu [[alternative HTML version deleted]]
2010 Nov 07
2
How is MissInfo calculated? (mitools)
...0.27310639 0.1613537 0 % as.factor(ethnic3)1 0.17297835 0.19556664 -0.21032531 0.5562820 0 % as.factor(ethnic3)2 0.63507020 0.18017975 0.28192410 0.9882163 0 % u -0.01322976 0.18896230 -0.40291914 0.3764596 64 % Thanks, Robin Jeffries MS, DrPH Candidate Department of Biostatistics UCLA 530-624-0428 [[alternative HTML version deleted]]
2011 Jun 09
3
Resources for utilizing multiple processors
...) and c(t-1) into FUN2 to simulate b(t) and c(t). I'd love to have one core run FUN1 and another run FUN2, and better yet, a third to run all the pre-and post- processing tidbits! So if anyone has any suggestions as to a direction I can look into, it would be appreciated. Robin Jeffries MS, DrPH Candidate Department of Biostatistics UCLA 530-633-STAT(7828) [[alternative HTML version deleted]]
2011 Jan 19
1
Printing "pretty' vectors in Sweave
...n't seem to assign it to an object, 1,2,3,4> myvec <- cat(c, sep=",") 1,2,3,4> myvec NULL and if I bypass the object assignment and put "My vector is (\Sweave{cat(c, sep=",")}). " prints out "My vector is (). " Suggestions? Robin Jeffries MS, DrPH Candidate Department of Biostatistics UCLA 530-624-0428 [[alternative HTML version deleted]]
2002 Feb 19
1
exact confidence intervals for conditional logistic regression
...tic 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) 554-2848 Pgr: (415) 809-7837, Mob: (415) 706-5203 Email: tomas.aragon at sfdph.org URL: http://www.medepi.org/aragon -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-...
2011 Feb 02
2
Help with one of "those" apply functions
...s ... subject.value[5] <- sum(value[11:15]) # the next 5 measurements I'd imagine it'll be some sort of *apply(value, nrep, sum) but I can't seem to land on the right format. Can someone give me a heads up as to what the correct syntax and function is? Danke, Robin Jeffries MS, DrPH Candidate Department of Biostatistics UCLA 530-624-0428 [[alternative HTML version deleted]]
2005 Dec 08
0
Assessing fit for non-nested models using clogit in survival package
...am interested in comparing and assessing fit of non-nested models. I don't want to program all the diagnostics described in Hosmer/Lemeshow (2000). Can someone proficient with clogit and assessing fit for non-nested models point me in the right direction. Many thanks! Tomas Tomas Aragon, MD, DrPH Tel: 510-847-9139 (mobile) URL: http://www.idready.org
2008 Nov 07
0
clogit and small sample sizes: what to do?
...tic 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 2008. Ok, I tried to do some homework and started to look for packages maybe implementing different methods. I did run across 'elrm' (Zamar, D., McNeney, B. &...
2004 Sep 26
2
help for stata user
Hi, I'm new to R, and I'm STATA user before, could you help me where I can get document about comparison command between STATA and R. Thank you very much, Best regards, -iip-
2004 Feb 11
6
lapply and dynamically linked functions
Hi all, I'm trying to use lapply on a list with the following command: out<-lapply(mylist,myfun,par1=p,par2=d) (1) where myfun<-function(x,par1,par1) {.....} (2) now this function is in fact a wrapper for some Fortran code I have written so I think this might be the problem. When I call lapply() as in (1) I get the following message: Error in get(x,
2004 Aug 19
6
Is R good for not-professional-statistician, un-mathematical clinical researchers?
Alternate title: How can I persuade my students that R is for them? Alternate title: Can R replace SAS, SPSS or Stata for clinicians? I am teaching introductory statistics to twelve physicians and two veterinarians who have enrolled in a Mentored Clinical Research Training Program. My course is the first in a sequence of three. We (the instructors of this sequence) chose to teach R rather than