This report overviews and contextualises the Mental Health and Wellbeing Transition Study methodology, describes the study populations and presents the key findings from the first two technical reports of the Study, Mental Health Prevalence and Pathways to Care. The Mental Health and Wellbeing Transition Study is one of three studies that comprise the Transition and Wellbeing Research Programme.

The Transition and Wellbeing Research Programme Key Findings is the final of eight reports and two papers comprising the Transition and Wellbeing Research Programme. It summarises and consolidates the overall key findings from each of the three interrelated studies that make up the Programme: the Mental Health and Wellbeing Transition Study, the Impact of Combat Study and the Family Wellbeing Study.

This Programme constitutes a unique and valuable source of information about those who have recently transitioned from Regular ADF service (between 2010 and 2014), those who were still serving in the Regular (full-time) ADF in 2015, and those who have served on contemporary operations.

A further unique component of this Programme is its examination of the mental and physical health of ADF Reservists, in particular Abinitio Reservists who have never served in the Regular ADF.

It is also the first Australian study to specifically examine the impact of military service (not operation specific) and transition on ADF family members (partners, parents and children), whereby data were collected on both the serving member and their nominated family members contemporaneously.

The key findings presented in this report represent an overall summary of the Programme findings and should be considered in the context of prior Australian and international reports on mental health and wellbeing in both military and veteran populations.

This Mental Health Prevalence Report is the first of eight reports and two papers that comprise the Transition and Wellbeing Research Programme (the Programme). The Programme is the most comprehensive study undertaken in Australia on the impact of military service on the mental, physical and social health of Transitioned and 2015 Regular Australian Defence Force (ADF) members and their families (the study populations).

This report investigates the prevalence of 12-month and lifetime mental disorders, trauma exposure, suicidal ideation and self-reported mental health symptoms among Transitioned ADF members. Comparisons are also made between the self-reported mental health symptoms in Transitioned ADF with 2015 Regular ADF members and where possible, with the Australian Community.

The second report in the Programme, Pathways to Care, tells the next phase in the ADF mental health story by investigating how Transitioned ADF and 2015 Regular ADF members access, use and value mental health care services.