The extensive literature on smoking behaviour has focused on numerous aspects such as the factors that influence the decision to start smoking and, for smokers, what factors influence consumption and decisions to quit. This study focuses on the determinants of the typical daily volume of...

Health related data with discrete ordered dependent variables are often characterised by excessive 'zero' observations that may relate to two distinct data generating processes. For example, there may be a large proportion of 'no visit' in modeling discrete ordered levels of health service uses...

We investigated marijuana, alcohol and tobacco consumption using micro-unit data from the Australian National Drug Strategy Household Surveys. We estimated a multivariate probit (MVP) model to allow for correlations across participations of different drugs and a sequential model to study...