Hi all! I want to do some logistic regression. Is there a fintion in R that does this, or do I have to do the variable conversion by hand? Thankful for all the help I can get. /Fredrik -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Logistic regression in R?
5 messages · Fredrik Karlsson, Peter Dalgaard, Jonathan Baron +1 more
Fredrik Karlsson <fredrik.karlsson at ling.umu.se> writes:
Hi all! I want to do some logistic regression. Is there a fintion in R that does this, or do I have to do the variable conversion by hand? Thankful for all the help I can get.
glm(...., family=binomial) should do it (unless you mean something different than the usual by "logistic regression")
O__ ---- Peter Dalgaard Blegdamsvej 3 c/ /'_ --- Dept. of Biostatistics 2200 Cph. N (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
On 03/25/02 15:26, Fredrik Karlsson wrote:
Hi all! I want to do some logistic regression. Is there a fintion in R that does this, or do I have to do the variable conversion by hand?
The simplest way of doing this is to use glm, with family=binomial See http://www.psych.upenn.edu/~baron/rpsych.htm section 6.9.
Jonathan Baron, Professor of Psychology, University of Pennsylvania Home page: http://www.sas.upenn.edu/~baron -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
On 25-Mar-2002 Peter Dalgaard BSA wrote:
Fredrik Karlsson <fredrik.karlsson at ling.umu.se> writes:
Hi all! I want to do some logistic regression. Is there a fintion in R that does this, or do I have to do the variable conversion by hand? Thankful for all the help I can get.
glm(...., family=binomial) should do it (unless you mean something different than the usual by "logistic regression")
glm() gives results in terms of log odds ratios. Most epidemiologists that I know prefer to think in terms of odds ratios, and it would be quite helpful to have a summary function that reports estimates and confidence intervals for the transformed parameters. I don't know if that is what Fredrik means by "variable conversion", but it reminded me of this problem. I suggest a "transform=FUN" argument for summary.glm. Incidentally, stata and SAS both have separate procedures for logistic regression and glms, perhaps for this reason, in addition to historical ones. Martyn -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Thank you everyone for the quick responses! glm did solve my problem! /Fredrik
On Mon, Mar 25, 2002 at 03:39:18PM +0100, Peter Dalgaard BSA wrote:
Fredrik Karlsson <fredrik.karlsson at ling.umu.se> writes:
Hi all! I want to do some logistic regression. Is there a fintion in R that does this, or do I have to do the variable conversion by hand? Thankful for all the help I can get.
glm(...., family=binomial) should do it (unless you mean something different than the usual by "logistic regression") -- O__ ---- Peter Dalgaard Blegdamsvej 3 c/ /'_ --- Dept. of Biostatistics 2200 Cph. N (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._