title: Extracting data from logistf in R
body: <p>I cannot figure out how to extract the standard error "sd(coef)" information from the <code>logistf()</code> regression model. These models are of class logistf and the manual states that data can be extracted this way:</p>
  
  <blockquote>
    <p>The following generic methods are available for logistf`s output object: print, summary, coef, vcov, confint, anova, extractAIC, add1, drop1, profile, terms, nobs.</p>
  </blockquote>
  
  <p>However, the standard error is not there.There isn't an object in str(summary(fit)) for the se(coef) and I have had a look at the source code without luck.</p>
  
  <p>Any help would be appreciated!</p>
  
  <pre><code>logistf(formula = newdata[, i] ~ newdata[, j], data = newdata, 
      firth = TRUE)
  Model fitted by Penalized ML
  Confidence intervals and p-values by Profile Likelihood 
  
                        coef  se(coef) lower 0.95 upper 0.95        Chisq p
  (Intercept)  -4.110874e+00 0.8276236  -6.283919  -2.824075          Inf 0
  newdata[, j]  1.691332e-08 1.6689839  -4.993849   2.957865 3.552714e-15 1
  
  Likelihood ratio test=3.552714e-15 on 1 df, p=1, n=122
  </code></pre>