[R] Coefficients of Logistic Regression from bootstrap - how to get them?

[Mark Difford]

Hi All,

It really comes down to a question of attitude: you either want to learn
something fundamental or core and so bootstrap yourself to a "better" place
(at least away from where you are), or you don't. As Marc said, Michal seems
to have erected a wall around his thinking.

I don't think it's fair to take pot shots at Frank for not wanting to
promote or further something he doesn't believe in. He's a regular
contributor to the list, who gives sound advice. He's also one of the few
experts on the list who is prepared to give statistical advice.

Regards, Mark.


Rolf Turner-3 wrote:
> 
> 
> On 23/07/2008, at 1:17 PM, Frank E Harrell Jr wrote:
> 
>> Michal Figurski wrote:
>>> Hmm...
>>> It sounds like ideology to me. I was asking for technical help. I  
>>> know what I want to do, just don't know how to do it in R. I'll go  
>>> back to SAS then. Thank you.
>>> -- 
>>> Michal J. Figurski
>>
>> You don't understand any of the theory and you are using techniques  
>> you don't understand and have provided no motivation for.  And you  
>> are the one who is frustrated with others.  Wow.
> 
> 	Come off it guys.  It is indeed very frustrating when one asks ``How  
> can I do X''
> 	and gets told ``Don't do X, do Y.''  It may well be the case that  
> doing X is
> 	wrong-headed, misleading, and may cause the bridge to fall down, or  
> the world to
> 	come to an end.  Fair enough to point this out --- but then why not  
> just tell
> 	the poor beggar, who asked, how to do X?
> 
> 	The only circumstance in which *not* telling the poor beggar how to  
> do X is
> 	justified is that in which it takes considerable *work* to figure  
> out how to
> 	do X.  In this case it is perfectly reasonable to say ``I think  
> doing X is
> 	stupid so I am not going to waste my time figuring out for you how  
> to do it.''
> 
> 	I don't know enough about the bootstrapping software (don't know  
> *anything*
> 	about it actually) to know whether the foregoing circumstance  
> applies here.
> 	But I suspect it doesn't.  And I suspect that you (Frank) could tell  
> Michal in
> 	a few lines the answer to the question that he *asked* (as opposed,  
> possibly,
> 	to the question that he should have asked).
> 
> 	If it were my problem I'd just write my own bootstrapping function  
> to apply
> 	to the problem in hand.  It can't be that hard ... just a for loop  
> and a
> 	call to sample(...,replace=TRUE).
> 
> 	If you can write macros in SAS then .....
> 
> 		cheers,
> 
> 			Rolf
> 
> ######################################################################
> Attention:\ This e-mail message is privileged and confid...{{dropped:9}}
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 
> 

-- 
View this message in context: http://www.nabble.com/Coefficients-of-Logistic-Regression-from-bootstrap---how-to-get-them--tp18570684p18605881.html
Sent from the R help mailing list archive at Nabble.com.