Re: [R] Estimate hazard function from right-censored data only

[Spencer Graves]

If you are willing to assume an exponential distribution, then you can 
get a one-sided confidence bound on the exponential parameter.  The 
likelihood is the probability of what you observe.  Write that down and 
figure it out.  I'm sorry I don't have time to say more right now, but 
I've done it in the past.  It works. 

hope this helps.  spencer graves

John Fox wrote:

Dear Monica,

I'm not sure what the muhaz function is (it's not in the survival 
package), but regardless, unless I'm seriously mistaken, there's no 
information to estimate the hazard function if you haven't observed 
any events.

I hope that this helps,
 John
At 08:10 PM 11/4/2003 -0500, Monica L. Parra Torrado wrote:

Dear All,
I would like to ask if it is possible to estimate a hazard function 
using the muhaz command when all the data is right-censored.  My data 
has information of the number of weeks people has been unemployed but 
all of them are unemployed at the date of the survey, that is, I 
cannot observed when the individuals leave the unemployment state.
I appreciate your help,
Best,
Monica L.

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-----------------------------------------------------
John Fox
Department of Sociology
McMaster University
Hamilton, Ontario, Canada L8S 4M4
email: [EMAIL PROTECTED]
phone: 905-525-9140x23604
web: www.socsci.mcmaster.ca/jfox
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