[R] Correct Interpretation of survreg() coeffs

wwreith reith_william at bah.com
Fri May 4 15:43:53 CEST 2012


Am I correct in assuming that the output below essentially translates to
"Males have a mean time that is significantly lower than Females"? Is this
the correct way to interpret the fact that the coefficient is negative?
Assume the variale sex is treated as a factor with Female =0 and Male=1.

survmodel<-survreg(survobj~sex,data=data1, dist="weibull")
survsum<-summary(survmodel)
survsum
                            Value      Std. Error     z           p 
SexMale        -0.47830     0.3745 -1.2770 2.02e-01

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