Displaying 2 results from an estimated 2 matches for "optpars".
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2013 Mar 05
0
Error message from flexsurvreg
...on previous work of
my colleagues on similar projects, am trying to estimate an AFT model with
a generalized gamma distribution. When I execute the following code:
>flexsurvreg(timesurv ~ cycles + rcycle + cyctime, dist="gengamma")
I get the following error message:
Error in optim(optpars, minusloglik.flexsurv, t = Y[, "time"], dead = Y[,
:
non-finite finite-difference value [4]
I get an almost identical error (a 3 in the brackets instead of a 4) if I
use the dist = "weibull". But have no problems when I run survreg with
Weibull distribution on the same data...
2010 Jul 27
0
AIC from coxme
Hi,
I am running the following model:
fit1.full <- coxme(Surv(age_sym1, sym1) ~ sex + lifedxm*sex + (1|famid),
data=bip.surv)
I would like to extract the AIC from that object to calculate the AICC.
However, when I look at str(fit1.full) and summary(fit1.full) (pasted
below) I don't see anything that would allow me to get pull the AIC out
from that object.
Is there a way to retrieve the