[R] epitools and R 2.5

At work after updating to R 2.5 I get an error using epitab from package epitools, when at home (R 2.4) I get no error. Could someone help me? Thanks Pietro Bulian Servizio di Onco-Ematologia Clinico-Sperimentale I.R.C.C.S. Centro di Riferimento Oncologico Via Franco Gallini 2 33081 Aviano (PN

Re: [R] step in a model with strata

(model1,model2) but anova(model1,model2). I mail ordered F. Harrell book two weeks ago and today I just received my copy. Thank again Pietro - Original Message - From: Henric Nilsson (Public) [EMAIL PROTECTED] To: Pietro Bulian [EMAIL PROTECTED] Cc: r-help@stat.math.ethz.ch Sent

[R] step in a model with strata

covariate and testing with anova, until I have minimized the model. Is there a package were this can be done? or am I doing something wrong ? (I'm not a statistician). Thanks for hints Pietro Bulian Clinical and Experimental Hematology Research Unit Centro di Riferimento Oncologico, I.R.C.C.S. Via

[R] step in a model with strata

covariate and testing with anova, until I have minimized the model. Is there a package were this can be done? or am I doing something wrong ? (I'm not a statistician). Thanks for hints Pietro Bulian Clinical and Experimental Hematology Research Unit Centro di Riferimento Oncologico, I.R.C.C.S. Via

[R] cox.zph vs log-log survival plot

always rely on significance test from cox.zph or should I look at graphical pattern? Is age in this example violating proportionality? I paste below eta (age) TTP (time to event) CENSOTTP (censor) Thank you Pietro Bulian Clinical and Experimental Hematology Research Unit Centro di Riferimento