[R] Estimated Standard Error for Theta in zeroinfl()
Lam, Tzeng Yih
Tzengyih.Lam at oregonstate.edu
Mon Feb 15 00:49:20 CET 2010
Dear R Users,
When using zeroinfl() function to fit a Zero-Inflated Negative Binomial (ZINB) model to a dataset, the summary() gives an estimate of log(theta) and its standard error, z-value and Pr(>|z|) for the count component. Additionally, it also provided an estimate of Theta, which I believe is the exp(estimate of log(theta)).
However, if I would like to have an standard error of Theta itself (not the SE.logtheta), how would I obtain or calculate that standard error?
Thank you very much for your time.
Best regards,
Tzeng Yih Lam
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