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easyer
2005 Aug 27
1
survival parametric question
...s 2.781 0.2105 13.21 7.35e-40
Log(scale) -0.945 0.1514 -6.24 4.25e-10
and the loglikelihood -82.0
I dont know the specification of the weibull that Desing package uses so I can't evaluate the result.
For comparison reasons I have estimated the same model using another spftware EasyReg
wich gave the following results( the weibull specification has the form a(1).a(2).t^(a(2)-1):
parameters ML estimate t-value p-value Covariates
beta(1) 2.411460 2.136 0.03265 fishes
beta(2) 2.710115 3.322 0.00089 computers
beta(3) -7.539632 -2.646 0.00815 EBTtoTA
beta(4)...