Displaying 2 results from an estimated 2 matches for "defibril".
2007 Oct 01
3
Apparently Conflicting Results with coxph
...PtNo Start End Status Imp
1 1 0 608.0 0 0
2 2 0 513.0 0 0
3 2 513 887.0 0 1
4 3 0 57.0 0 0
5 3 57 604.0 0 1
6 4 0 150.0 1 0
The outcome is mortality and the covariate is for an implantable
defibrillator, so it is expected that the implant would reduce the
risk of death. The results of fitting coxph (survival package) are:
Call:
coxph(formula = Surv(Start, End, Status) ~ Imp, data = nina.excl)
coef exp(coef) se(coef) z p
Imp 0.163 1.18 0.485 0.337 0.74
Likelihood ratio...
2016 Jun 21
0
https and self signed
...t all?
Expiry is a fundamental part of many things including life itself.
That does not imply that shorter is better.
Why sign software with an expiry date when you know that your recovery
programme will fail to operate after it expires? Imagine that you are
on a hospital operating table and the defibrillators fail to function
because the certificate that signed the firmware has expired. And that
the immediate the fix is to simply reset the computer clock in the
defibrillator controller backwards in time. Which of course no-one in
the OR knows. So, too bad. But, you were secure when you expired....