Hi all, I'm a potential new user of R and have to know this before I start using it: SPSS does not let you do a Post Hoc analysis on repeated measures data. This is a problem for me, since that is what I will have to do. Will R let me do this? /Fredrik -- ----------------------------------------------------------------- Fredrik Karlsson, Research Student Department of Philosophy and Linguistics Ume? University S-901 87 UME? SWEDEN Tel: +46 90 786 56 84 Web: http://www.ling.umu.se/~fredrik/ Fax: +46 90 786 63 77 Email: fredrik at ling.umu.se PGP-fingerprint: 1A331A408866270DFD9CAAF277ECF390115BB84 ----------------------------------------------------------------- -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- 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 _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Hi Frederik, this is one of the reason why i now use R rather than SPSS. In this case SPSS isn't worth a penny. jan On Fri, 02 Mar 2001, Fredrik Karlsson wrote:> Hi all, > > I'm a potential new user of R and have to know this before I start using it: > SPSS does not let you do a Post Hoc analysis on repeated measures data. > This is a problem for me, since that is what I will have to do. > Will R let me do this? > > > /Fredrik-- +----------------------------------- Jan Goebel (mailto:jgoebel at diw.de) DIW Berlin Longitudinal Data and Microanalysis K?nigin-Luise-Str. 5 D-14195 Berlin -- Germany -- phone: 49 30 89789-377 +----------------------------------- -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- 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 _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Fredrik Karlsson <fredrik at ling.umu.se> writes:> Hi all, > > I'm a potential new user of R and have to know this before I start using it: > SPSS does not let you do a Post Hoc analysis on repeated measures data. > This is a problem for me, since that is what I will have to do. > Will R let me do this?Not out of the box. It would certainly depend on what kind of repeated measures model and what kind of post hoc test. The generic multiple testing approach (p.adjust()) is always available if only you can find the p-s to adjust.... Scheffe-style tests are also quite generally available if you have a covariance matrix of the estimates for a given effect. You'd have to write yourself, which shouldn't be too hard to do. Doug Bates has (had?) a student working on related stuff. Things like multiple range procedures generally have requirements on the structure of the covariance matrix for the means, and would only work under sphericity assumptions, I think. -- 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 _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Fredrik Karlsson wrote:> > Hi all, > > I'm a potential new user of R and have to know this before I start using it: > SPSS does not let you do a Post Hoc analysis on repeated measures data. > This is a problem for me, since that is what I will have to do. > Will R let me do this? > > /FredrikHi, I don't know any post hoc tests for repeated measurements. However, it's possible that SPSS has allowed the standard post hoc tests (eg. Duncan, Turkey etc) in repeated measure designs some years ago (I've heard about that). SPSS now offers pairwise comparisons with bonferroni adjustment, which is available in R too. Bye, Sven -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- 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 _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._