[R] how to retrieve robust se in coxph

[Thomas Lumley]

On Thu, 16 Feb 2006, ronggui wrote:

> see robcov in Design package.

No, don't.  This is not the same thing at all.

 	-thomas

>
> 2006/2/16, Lei  Liu <ll9f at cms.mail.virginia.edu>:
>> Hi,
>>
>> I am using coxph in simulations and I want to store the "robust se" (or
>> "se2" in frailty models) for each replicate. Is there a function to retrieve
>> it, like vcov() for the variance estimate? Thanks!
>>
>> Lei Liu
>> Assistant Professor
>> Division of Biostatistics and Epidemiology
>> Dept. of Public Health Sciences
>> School of Medicine
>> University of Virginia
>>
>> 3181 Hospital West Complex
>> Charlottesville, VA 22908-0717
>>
>> 1-434-982-3364 (o)
>> 1-434-806-8086 (c)
>>
>> liulei at virginia.edu
>> ll9f at virginia.edu
>>
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>
>
> --
> »ÆÈÙ¹ó
> Deparment of Sociology
> Fudan University
>
>

Thomas Lumley			Assoc. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle