Estimating double-hurdle models with dependent errors and heteroskedasticity
This paper describes the estimation of the parameters of a double-hurdle model in Stata. It is shown that the independent double-hurdle model can be estimated using a combination of existing commands. Likelihood evaluators to be used with Stata’s ml facilities are derived to illustrate how to fit independent and dependent inverse hyperbolic sine double-hurdle models with heteroskedasticity.