R help - Dec 2012 - rms R code

Greetings, useRs.

Does anybody have replication of the examples from the RMS book by Harrell coded
in R? I find that most the code does not work and it takes too much time to
debug.

For example from p.276
> age.t <- w[,"age"]
> f.full <-
lrm(cvd~scored(rx)+rcs(dtime,5)+age.t+wt.t+pf.t+hx+sbp+ekg.t+sz.t+sg.t+ap.t+bm+hg.t,x=T,y=T)
Error in model.frame.default(formula = cvd ~ scored(rx) + rcs(dtime, 5) +  : 
  invalid type (list) for variable 'age.t'

thanks everybody.

Stephen

Did you try the website for the book?

http://biostat.mc.vanderbilt.edu/wiki/Main/RmS



On Mon, Dec 17, 2012 at 4:06 PM, Bond, Stephen <Stephen.Bond at cibc.com>
wrote:
> Greetings, useRs.
>
> Does anybody have replication of the examples from the RMS book by Harrell
coded in R? I find that most the code does not work and it takes too much time
to debug.
>
> For example from p.276
>> age.t <- w[,"age"]
>> f.full <-
lrm(cvd~scored(rx)+rcs(dtime,5)+age.t+wt.t+pf.t+hx+sbp+ekg.t+sz.t+sg.t+ap.t+bm+hg.t,x=T,y=T)
> Error in model.frame.default(formula = cvd ~ scored(rx) + rcs(dtime, 5) + 
:
>   invalid type (list) for variable 'age.t'
>
> thanks everybody.
>
> Stephen
>
--
Sarah Goslee
http://www.functionaldiversity.org