[datatable-help] RELSURV - difficulty interpreting RSADD and RSMUL coefficients
karl69
carlos.falcao.correia at gmail.com
Wed Apr 6 22:22:44 CEST 2016
Hi, allUsing relsurv package - rsadd and rsmul I got the following
coefficients for a colorectal cancer study:
Addictive - Estève Multiplicative - Andersen
Coef (SE) Exp(coef) p-value Coef (SE) Exp(coef)
p-valuesex female -0.06957 (0.0646) 0.9328 0.28145 0.51641 (0.0559)
1.6760 <2e-16Age 45-54 0.15426 (0.1668) 1.1668 0.35513 -0.67519
(0.1635) 0.5091 3.63e-05Age 55-64 0.27521 (0.1535) 1.3168
0.07300 -1.28001 (0.1497) 0.2780 <2e-16Age 65-74 0.39229
(0.1515) 1.4804 0.00963 -2.05659 (0.1279) 0.1279 <2e-16Age 75+
0.84512 (0.1569) 2.3283 7.22e-08 -2.63199 (0.1488) 0.0719 <2e-16I can
see that the variables that are used in lifetables, like sex and age changed
its sign.I noticed, too, that for other covariates, like cancer stage,
coefficients are bigger in addictive model than in multiplicative, but
keeping the same sign.I'm not being able to interpret these differences. Can
someone help?Thanks,Carlos Falcao
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