Displaying 1 result from an estimated 1 matches for "igr1".
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gr1
2005 Nov 06
2
cox models
...etween 1 and 5. When i put it in the cox model i have only the
level between 2 and 5. The level 1 doesn't appear. I think i have to
change the number of level but i don't really know. Please can you help
me?
Class
Levels: 1 2 3 4 5
coxph(formula = Surv(delai.etat, etat) ~ class, data = igr1)
coef exp(coef) se(coef) z p
class2 -0.093 0.911 0.245 -0.38 7.0e-01
class3 -0.749 0.473 0.286 -2.62 8.9e-03
class4 -0.600 0.549 0.343 -1.75 8.0e-02
class5 -0.874 0.417 0.197 -4.44 8.9e-06
Likelihood ratio test=24.9 on 4 df, p=5.28e-05 n=740 (1 o...