Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

Re: st: OLS regression versus survival analysis


From   "ellen mastenbroek" <e.mastenbroek@lycos.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: OLS regression versus survival analysis
Date   Fri, 14 Jun 2002 09:49:48 +0100

Thank you all for your replies; I have decided to stick with survival analysis (and I've ordered Cleves, GOuld and Gutierrez- thanks for the tip!).

Ellen Mastenbroek
Leiden University
The Netherlands


--

On Wed, 12 Jun 2002 13:29:41  
 David Greenberg wrote:
>Censoring is not the only reason for preferring survival analysis to OLS 
>regression for event times or logged event times. As is pointed out in 
>Cleves, Gould and Gutierrez, AN INTRODUCTION TO SURVIVAL ANALYSIS USING 
>STATA, censorship could be handled through selection models. It is 
>rather that the distribution of event times are often far from normal 
>that makes survival models usually superior to OLS regression. David 
>Greenberg, Sociology Department, New York University. 
>
>----- Original Message -----
>From: Ronan Conroy <rconroy@rcsi.ie>
>Date: Wednesday, June 12, 2002 10:10 am
>Subject: Re: st: OLS regression versus survival analysis
>
>> on 12/6/02 1:05 PM, ellen mastenbroek at e.mastenbroek@lycos.com 
>> wrote:
>> > I have set out to do a survival analysis, but it has become 
>> clear that only 3
>> > % of the cases are censored. Is it advisable to then carry out 
>> regular OLS
>> > regression instead (the advantage being that OLS results are 
>> more easy to
>> > interpret)?
>> 
>> No. Your endpoint is binary. You want to figure out what effect 
>> does a
>> particular predictor have on the risk of an event happening. 
>> That's a hazard
>> ratio. 
>> 
>> Start with Kaplan Meier graphs, which are even easier to interpret 
>> than OLS
>> regression, and work from there.
>> 
>> 
>> 
>> Ronan M Conroy (rconroy@rcsi.ie)
>> Lecturer in Biostatistics
>> Royal College of Surgeons
>> Dublin 2, Ireland
>> +353 1 402 2431 (fax 2329)
>> 
>> --------------------
>> And now, Mr President, how about the global alliance against 
>> climate change?
>> *
>> *   For searches and help try:
>> *   http://www.stata.com/support/faqs/res/findit.html
>> *   http://www.stata.com/support/statalist/faq
>> *   http://www.ats.ucla.edu/stat/stata/
>> 
>
>*
>*   For searches and help try:
>*   http://www.stata.com/support/faqs/res/findit.html
>*   http://www.stata.com/support/statalist/faq
>*   http://www.ats.ucla.edu/stat/stata/
>


_______________________________________________________
WIN a first class trip to Hawaii.  Live like the King of Rock and Roll
on the big Island. Enter Now!
http://r.lycos.com/r/sagel_mail/http://www.elvis.lycos.com/sweepstakes
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   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   |   What's new   |   Site index