Dear R-user:

After the fitting the Tobit model using zelig, if I use the following command then I can get the regression coefficents:

beta=coefficients(il6.out)
> beta
(Intercept)      apache 
     4.7826      0.9655 

How may I extract the "Naive SE" from the following output please?

> summary(il6w.out)
Call:
zelig(formula = il6.data$il6 ~ il6.data$apache, model = "tobit", 
    data = il6.data, robust = TRUE, cluster = "il6.data$subject", 
    weights = il6.data$w)
                Value Std. Err (Naive SE)     z         p
(Intercept)     4.572  0.12421    0.27946  36.8 1.44e-296
il6.data$apache 0.983  0.00189    0.00494 519.4  0.00e+00
Log(scale)      2.731  0.00660    0.00477 414.0  0.00e+00
Scale= 15.3 
Gaussian distribution
Loglik(model)= -97576   Loglik(intercept only)= -108964
        Chisq= 22777 on 1 degrees of freedom, p= 0 
(Loglikelihood assumes independent observations)
Number of Newton-Raphson Iterations: 6 
n=5820 (1180 observations deleted due to missingness)

I would appreciate if any help you could provide please. Thank you. 

Sattar


 
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