Message-ID: <30411786F64EEF46856EFBA2CD917799E052C1@UHEXMBSPR03.umhs.med.umich.edu>
Date: 2013-06-12T13:34:46Z
From: Andrews, Chris
Subject: survreg with measurement uncertainties
In-Reply-To: <CAAF=944aDzh27CT1-5rYMX57=jKXRHxGvGCdhwcnqsYSSCyjkQ@mail.gmail.com>
survreg allows interval censored data, if that is how you want to represent measurement uncertainty. See
?Surv
-----Original Message-----
From: Kyle Penner [mailto:kpenner at as.arizona.edu]
Sent: Tuesday, June 11, 2013 8:02 PM
To: r-help at r-project.org
Subject: [R] survreg with measurement uncertainties
Hello,
I have some measurements that I am trying to fit a model to. I also have uncertainties for these measurements. Some of the measurements are not well detected, so I'd like to use a limit instead of the actual measurement. (I am always dealing with upper limits, i.e. left censored data.)
I have successfully run survreg using the combination of well detected measurements and limits, but I would like to include the measurement uncertainty (for the well detected measurements) in the fitting. As far as I can tell, survreg doesn't support this. Does anyone have a suggestion for how to accomplish this?
Thanks,
Kyle
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