[R-sig-Epi] lognormal distribution in survreg

[Mariana Wagner]

I fit a lognormal model to survival data using survreg.  I am confused about the output, because I do not know how to interprete the
"scale." The output is:

Call:
survreg(formula = surv1 ~ p$score, dist = "lognormal")
               Value Std. Error     z         p
(Intercept)   5.5891     0.1986 28.14 2.76e-174
p$score      -0.0162     0.0102 -1.58  1.14e-01
Log(scale)    0.4046     0.0594  6.81  9.65e-12

Scale= 1.5

Log Normal distribution
Loglik(model)= -996.1   Loglik(intercept only)= -997.4
        Chisq= 2.5 on 1 degrees of freedom, p= 0.11
Number of Newton-Raphson Iterations: 4
n= 505

Is scale the scale parameter of the lognormal distribution ? If yes is there no estimate of the standard derivation? 

Thanks,

Mariana