Displaying 2 results from an estimated 2 matches for "yuhanusa".
2013 Nov 04
0
Fwd: Re: How to obtain nonparametric baseline hazard estimates in the gamma frailty model?
-------- Original Message --------
Subject: Re: How to obtain nonparametric baseline hazard estimates in the gamma frailty model?
Date: Mon, 04 Nov 2013 17:27:04 -0600
From: Terry Therneau <therneau.terry at mayo.edu>
To: Y <yuhanusa at gmail.com>
The cumulative hazard is just -log(sfit$surv).
The hazard is essentially a density estimate, and that is much harder. You'll notice that
everyone does CDF curves for survival data ( Kaplan-Meier = estimate of 1-CDF), but no one
does histograms, which estimate a density. That...
2013 Oct 16
2
How to obtain restricted estimates from coxph()?
Hello,
I'm trying to use coxph() function to fit a very simple Cox proportional
hazards regression model (only one covariate) but the parameter space is
restricted to an open set (0, 1). Can I still obtain a valid estimate by
using coxph function in this scenario? If yes, how? Any suggestion would be
greatly appreciated. Thanks!!!
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