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Dear All, I get the following error when using either SASxport or Hmisc to read an .xpt file: > w <- read.xport("D:/consult/Trophos/dnp/base/TRO_ds_20081006.xpt") Erreur dans factor(x, f$value, f$label) : invalid labels; length 15 should be 1 or 14 > z<- sasxport.get("D:/consult/Trophos/dnp/base/TRO_ds_20081006.xpt") Erreur dans factor(x, f$value, f$label) : invalid labels; length 15 should be 1 or 1...

...oing non compartimental PK analysis by subject on a dataframe with subject, time and concentration variates. Thanks in advance for sharing and helping me not re-invent the wheel (which might be square given my R skills). Best wishes, Jean-Louis Jean-Louis Abitbol, MD Chief Medical Officer Trophos SA, Parc scientifique de Luminy, Case 931 Luminy Biotech Entreprises 13288 Marseille Cedex 9 France Email: jlabitbol at trophos.com ---- Backup Email: abitbol at sent.com Cellular: (33) (0)6 24 47 59 34 Direct Line: (33) (0)4 91 82 82 73-Switchboard: (33) (0)4 91 82 82 82 Fax: (33) (0)4 91 82 82...

...inical trials in general or more specific to my problem in R. Please answer to me directly to avoid OT inconvenience to the list and so that I am not black listed...I'll be happy to summarize if relevant to the list. Best regards, Jean-Louis Jean-Louis Abitbol, MD Chief Medical Officer Trophos SA, Parc scientifique de Luminy, Case 931 Luminy Biotech Entreprises 13288 Marseille Cedex 9 France Email: jlabitbol at trophos.com ---- Backup Email: abitbol at sent.com Cellular: (33) (0)6 24 47 59 34 Direct Line: (33) (0)4 91 82 82 73-Switchboard: (33) (0)4 91 82 82 82 Fax: (33) (0)4 91 82 82...

...an error message such as "target of the assign does not belong to the language" (translation from French). I have looked in the FAQ but do not understand how to use assign in this context. Thanks for any help, Kind regards, Jean-Louis Dr. Jean-Louis Abitbol Directeur Recherche Clinique Trophos SA, Parc scientifique de Luminy, Case 931 Luminy Biotech Entreprises 13288 Marseille Cedex 9 Tel 04 91 82 82 73, Fax 04 91 82 82 89 Portable 06 24 47 59 34

...1 1 > Actually I have many more multiple choice questions in the survey. What is the easy elegant and natural way in R to do the job? ------------------------------ Message: 31 Date: Mon, 29 Sep 2008 15:55:35 +0200 From: "Jean-Louis Abitbol" <jlabitbol at trophos.com> Subject: [R] Script for dose proportionality assessment using power model and confidence interval criteria To: "R Help" <r-help at stat.math.ethz.ch> Message-ID: <1222696535.17289.1276523769 at webmail.messagingengine.com> Content-Type: text/plain; charset="ISO-...