R help - Feb 2016 - Estimating Mean of a Poisson Distribution Based on interval censoring

For an interval censored poisson or lognormal, use survreg() in the survival
package.  (Or
if you are a SAS fan use proc lifereg).  If you have a data set where R and SAS
give
different answers I'd like to know about it, but my general experience is
that this is
more often a user error.  I am also curious to learn exactly what you mean by
"interval
censored poisson".  Exponential with interval time to first event is
equivalent to
poisson, which is what I'd guess from "lognormal", but you may
mean something else.


Terry Therneau
(author of survival)



On 02/14/2016 05:00 AM, r-help-request at r-project.org
wrote:
> Dear all,
> I appreciate that if you let me know if there is any package implemented in
R for Estimating Mean of a Poisson Distribution Based on Interval censoring? And
if yes, could you please provide some information about it:)?
> By the way, is there anything for lognormal?I think fitdistcens is not good
for this purpose as it gives me different result compared to SAS and only useful
for right/left censoring and not interval censoring?(or both left and right
together).?
> Kind regards,Mohsen