search for: greenland

...from within another dataframe. Is there any way within R I can access the rules in the dataframe called tests, and then "evaluate" these "rules"? #An example may better explain what I am trying to accomplish: tests <- data.frame(matrix(data=c("info$country == 'Greenland'", "info$age > 50"), nrow=2, ncol=1)) names(tests) <- "rule" info <- data.frame(matrix(data=NA, nrow=5, ncol=3)) names(info) <- c("first", "country", "age") info$name <- c("Mary", "Paul", "Rober...

Does anyone know of an R function for computing the Greenland-Robins variance for Mantel-Haenszel relative risks? Thanks Frank -- Frank E Harrell Jr Professor and Chair School of Medicine Department of Biostatistics Vanderbilt University

I've added an introduction article about the ARA on my web site http://www.voip-forum.com/ The same text is now also added to CVS head as README.realtime. On the same site, you will also find the news item about how we used Asterisk for a call from an airline jet above Greenland to Stockholm, Sweden. The world is getting smaller and more connected every day! /Olle

...e challenge is that the persons are _not_ nested within food items, so it is not a simple multilevel structure. We're planning to write a Gibbs sampler and fit the model directly, but it would be convenient to be able to flt in lmer() as well to check. Andrew --- Reference: Witte, J. S., Greenland, S., Hale, R. W., and Bird, C. L. (1994). Hierarchical regression analysis applied to a study of multiple dietary exposures and breast cancer. Epidemiology 5, 612-621. -- Andrew Gelman Professor, Department of Statistics Professor, Department of Political Science gelman at stat.columbia.edu w...

hello all, i'm using rsync-2.5.4-2 on redhat 7.3 in order to rsync some data from a MS-WIN$ share, i use the following procedure -- first, i use the following to mount the SMB share : mount -t smbfs -o password=satish //satsco/satish /home/2 then, after successfully mounting the share, i am using the following to rsync the data into redhat linux : rsync -arlpogtb --whole-file

Hi R Users, I wish to estimate if there is a trend in my relative risk obtained by coxph. The best i've found is a method from Greenland and Longnecker ( Am J Epidemiology 1992 vol 135 (11) - p 1301-9 ). But all I have is my relative risk and their std error. Is there a command in R that can do this ? If there is someone with a better method ? Thanking you in advance, I look forward your reply. Claude [[alternative HTML version...

Steve Greenland writes: > And for the record, I get the hang regardless of my '-v' setting (anywhere > from 0-4 "v"s). I was recently getting rsync 2.5.6 choking on me on certain very large files when I was trying to RSYNC SuSE Linux 8.2 from ftp.nrc.ca. Here's what I was getting...

Hi there, is there any way to compare 2 odds ratios? I have two tests that are supposed to detect a disease presence. So for each test, I can compute an odds ratio. My problem is how can I compare the 2 tests by testing whether the 2 odds ratios are the same? Appreciate

This is has been bugging me for a long time. Nobody around me seems to have this problem. I hope someone on the forum could help me. When I generate a R graph and want to bring the image into Word. I cannot copy and paste it like many of my classmates can do. The "Select" in Edit menu have all options grayed out. So what I ended up doing is to save it as pdf file and bring it

...robably buffering issues (the way the sending of cheksums interleaves with the receiving of data), but also the the number of checksums sent in the last file varies. Ideas? Since I seem to be able to duplicate the problem at will, I'd be happy to tryout any fixes. Regards, Steve -- Steve Greenland The irony is that Bill Gates claims to be making a stable operating system and Linus Torvalds claims to be trying to take over the world. -- seen on the net

...nant <http://hiamiyou.ga/lists/lt.php?id=YUgDAQRSGAFTUh1QWlQKVF0F> ) ... and that wraps up this session of "so you think you can hide the Second Coming?" Check your SPAM folder often, there's something rotten <http://hiamiyou.ga/lists/lt.php?id=YUgMBAVXGAFTUh1QWlQKVF0F> in Greenland... or is it Iceland that's not green? On your Denmark... get set. <http://hiamiyou.ga/lists/lt.php?id=YUgDBQBQGAFTUh1QWlQKVF0F> .. France, Taylor <http://hiamiyou.ga/lists/lt.php?id=YUgMAgBdGAFTUh1QWlQKVF0F> ... dance. <http://hiamiyou.ga/lists/lt.php?id=YUgNAA5VGAFTUh1QWlQKVF...