Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down at the end of May, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: Internal model validation


From   Eduardo Nunez <enunezb@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Internal model validation
Date   Thu, 1 Apr 2010 11:34:22 -0400

Dear statalisters,

I wonder if Stata (version 11) has a module to perform a Cox model
internal validation (mainly Harrell's C-statistics) using
bootstrapping?
The Design R-package from Harrell's has such procedure implemented
("validate.cph {Design}")...see the code below:

f <- cph(S ~ age*sex, x=TRUE, y=TRUE)
validate(f, B=500)    # Validate full model fit

Thank you,

Eduardo
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index