extracting standard errors in glm.nb
Mea culpa. Thanks! jpl
David Winsemius wrote:
Look more thoroughly? You should see this about 2/3 the way down the output: $ coefficients : num [1:14, 1:4] 3.019 -0.475 -0.709 -0.724 -0.615 ... ..- attr(*, "dimnames")=List of 2 .. ..$ : chr [1:14] "(Intercept)" "SexM" "SexF:AgeF1" "SexM:AgeF1" ... .. ..$ : chr [1:4] "Estimate" "Std. Error" "z value" "Pr(>|z|)" You can also get the same information by entering: coef(sumnb1) -- David Winsemius On Feb 15, 2009, at 9:40 AM, jpl wrote:
Hi Dieter, I don't see anything in the str(model) output that matches the standard errors of the coefficients given in summary(model). Any other suggestion? Thanks. jpl Dieter Menne wrote:
jpl <s-jlubben1 <at> math.unl.edu> writes:
How do I extract the standard errors of the coefficients in a glm.nb model?
library(MASS) quine.nb1 <- glm.nb(Days ~ Sex/(Age + Eth*Lrn), data = quine) sumnb1 = summary(quine.nb1) sumnb1 str(sumnb1) # tells you about the anatomy. Check for $coefficients Dieter
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