Macdonald, ElspethGulliver, AmeliaChristensen, HelenGriffiths, Kathleen2018-01-152018-01-15http://hdl.handle.net/1885/139305The co-occurrence of substance use problems and mental health problems, referred to as ‘comorbidity’, is a widespread issue of clinical importance. The presence of one problem can increase the likelihood of the other problem occurring. Additionally, individuals with cooccurring mental health and substance use problems may have poorer outcomes than those with one disorder only.The research reported in this paper is a project of the Australian Primary Health Care Research Institute which is supported by a grant from the Australian Government Department of Health and Ageing under the Primary Health Care Research Evaluation and Development Strategy.0 vols.application/pdfen-AUAuthor/s retain copyright.