search for: virasakdi

Displaying 3 results from an estimated 3 matches for "virasakdi".

2008 Apr 21
1
Analysis of Epidemiological Data Using R
Hi everyone, I'm studying the manual name: Analysis of Epidemiological Data Using R and Epicalc, maked by: Virasakdi Chongsuvivatwong and Edward McNeil. And I can't find the data base that they use in some examples, this are the names: Chapter7.Rdata,Chapter8.Rdata,Chapter9.Rdata Somebody can tell me how can I have this files? Thk! Jos? O__ ---- Jos? Bustos M. c/ /'_ --- Master Apllied Stat Pr...
2009 Jul 27
0
ROC curve using epicalc (after logistic regression) (re-sent)
...aintainer, as suggested in the posting guide. Regards, Cliff ---------- Forwarded message ---------- From: Clifford Long <gnolffilc at gmail.com> Date: Sun, Jul 26, 2009 at 8:46 PM Subject: Fwd: ROC curve using epicalc (after logistic regression) To: cvirasak at medicine.psu.ac.th Dear Virasakdi Chongsuvivatwong, After sending the message below to the R-help mailing list, it occurred to me that I probably should also have sent a copy to you, per R posting guidance. I would be interested in any thoughts or suggestions that you might have regarding my difficulty using the ROCR routine in t...
2011 Dec 13
8
How to compute 95%CI for OR from logistic regression?
Hi all: My data has 3 variables: age(3levels : <30y=1 30-50y=2, >50y=3) gender(Male=0, Female=1) CD4 cell count(raw lab measurement) y(1:death 0:alive) I perform logistic regression to find out the factors that influence y. result<-glm(y ~ factor(age) + factor(gender) + CD4,family = binomial) >From the result,I can get OR(Odds Ratio) of gender via exp(Estimate of Female,