Changes in determinants of compulsory community treatment over 11 years. A populationbased analysis of linked mental health databases, Psychiatry Research, http://dx.doi.org/10.1016/j.psychres. 2015.09.027 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. were used to further examine potential predictors of a CTO. The incidence of CTOs, and the characteristics of patients placed on these orders, showed little change over 11 years. They tended to be younger and male with schizophrenia or other non-affective psychotic disorders.Previous health service use as an inpatient or outpatient also predicted compulsory community treatment. Psychiatrists in Western Australia appear to be applying community treatment orders to similar types of patient as elsewhere, but unlike other jurisdictions, use has not increased. We need further research to establish the relative contribution of patient characteristics, legislation and service setting toward the use and outcome of CTOs.