Mental health

Program Co-Leads

Our Mental Health research program undertakes a broad program of economics research with the aim of providing high quality evidence to help ensure mental health care provision is efficient, effective and appropriate to individual and broader community needs.

In order to achieve this goal, the team undertakes research focusing on the practical application of economic methodologies to the mental health context. This includes, but is not limited to, practical and applied economic evaluations of various mental health focused interventions as well as tailored methodological research ensuring that economic methodologies are appropriate and robust for use within the mental health context. Our specialist work includes the following:

  • Trial-based economic evaluations – preventative and treatment interventions across all life stages and multiple settings
  • Priority setting studies and modelled economic evaluations – single or multiple interventions within the one study context
  • Methodological challenges research – ensuring the techniques and methods we use in economics are appropriate and fit for purpose in the mental health context
  • Burden of disease studies – evaluating the costs and disease burden, for example quality of life losses

Recent highlights

Trial-based economic evaluations

Lee YY, Mihalopoulos C, Chatterton ML, Fletcher SL, Chondros P, Densley K, Murray E, Dowrick C, Coe A, Hegarty KL, Davidson SK, Wachtler C, Palmer VJ, Gunn JM. Economic evaluation of the Target-D platform to match depression management to severity prognosis in primary care: A within-trial cost-utility analysis. PLoS One. 2022 May 25;17(5):e0268948. doi: 10.1371/journal.pone.0268948.

This economic evaluation won the inaugural Australian Clinical Trials Alliance HEAT-ACTA Excellence in Trial-based Health Economics Award in 2023. It was conducted alongside the first randomised controlled trial of an e-health platform designed to personally tailor depression management in primary care. The results suggest that, over 12 months, the screening and intervention program is likely to be a more effective and cost-effective approach than usual care in general practice. Our findings are of particular importance given the focus on digital mental health programs recommended by the Australian Productivity Commission Inquiry Report into Mental Health.

Le LK, Sanci L, Chatterton ML, Kauer S, Buhagiar K, Mihalopoulos C. The Cost-Effectiveness of an Internet Intervention to Facilitate Mental Health Help-Seeking by Young Adults: Randomized Controlled Trial. Journal of Medical Internet Research. 2019 Jul 22;21(7):e13065. doi: 10.2196/13065.

This is the first study which found that the online youth mental health help-seeking Web service is a cost-effective intervention for young people aged 18 to 25 years compared with traditional search methods in Australia.

Engel L, Alvarez-Jimenez M, Cagliarini D, D'Alfonso S, Faller J, Valentine L, Koval P, Bendall S, O'Sullivan S, Rice S, Miles C, Penn DL, Phillips J, Russon P, Lederman R, Killackey E, Lal S, Maree Cotton S, Gonzalez-Blanch C, Herrman H, McGorry PD, Gleeson JFM, Mihalopoulos C. The Cost-Effectiveness of a Novel Online Social Therapy to Maintain Treatment Effects From First-Episode Psychosis Services: Results From the Horyzons Randomized Controlled Trial. Schizophrenia Bulletin. 2023 Jun 1:sbad071. doi: 10.1093/schbul/sbad071. Epub ahead of print. PMID: 37261464.

This study evaluated the cost-effectiveness of Horyzons, a novel online social therapy to support young people aged 16-27 years following discharge from first episode psychosis service, showing that the intervention is cost-effective and results in large net budget savings to the Australian healthcare system.

Modelled/priority setting studies

We recently evaluated 10 mental health promotion/prevention interventions for the National Mental Health Commission.

This research found that nine of the 10 interventions modelled provided excellent value for money and would likely save more resources than they cost. This research was cited by the Productivity Commission into Australia’s mental health care system and was subsequently published in a series of papers. It has informed investment discussions for preventive interventions into mental disorders and cited by organisations such as Prevention United.

Le LK, Barendregt JJ, Hay P, Sawyer SM, Hughes EK, Mihalopoulos C. The modeled cost-effectiveness of family-based and adolescent-focused treatment for anorexia nervosa. International Journal of Eating Disorders. 2017 Dec;50(12):1356-1366. doi: 10.1002/eat.22786. Epub 2017 Oct 16.

This study examined the cost effectiveness of family-based treatment compared to individual therapy and treatment as usual for adolescents with anorexia nervosa. Results supported the implementation of an intensive but very cost-effective first-line family therapy for adolescents with anorexia nervosa. Findings of this study were used by the Medicare Eating Disorder Taskforce to inform the revised Medicare funding policy in 2019 for people with eating disorders – whereby people with eating disorders can now receive up to 60 treatment sessions compared to 10 sessions in the past.

Methodological research

Engel L, Chen G, Richardson J, Mihalopoulos C. The impact of depression on health-related quality of life and wellbeing: identifying important dimensions and assessing their inclusion in multi-attribute utility instruments. Quality of Life Research. 2018 Nov;27(11):2873-2884. doi: 10.1007/s11136-018-1936-y.

This study showed that commonly used preference-based quality of life instruments are unable to capture the impact of depression, except for the AQoL-8D. This has important implications around the choice of outcome measure for use in economic evaluations of mental health interventions.

Mihalopoulos C, Chen G, Scott JG, Bucholc J, Allen C, Coghill D, Jenkins P, Norman R, Ratcliffe J, Richardson J, Stathis S, Viney R. Assessing Outcomes for Cost-Utility Analysis in Children and Adolescents With Mental Health Problems: Are Multiattribute Utility Instruments Fit for Purpose? Value in Health. 2023 May;26(5):733-741. doi: 10.1016/j.jval.2022.12.007. Epub 2022 Dec 16.

This study found that many questionnaires used to determine quality-adjusted life-years (including the EQ-5D, the SCU9D and the AQoL 6D) are valid and sensitivity measures in children/adolescents with mental disorders when compared to other self-report mental health outcome measures. When these questionnaires were compared to questionnaires completed by clinicians or carers they did not perform as well.

Burden of disease studies/reviews

Le LK, Mihalopoulos C, Engel L, Touyz S, González-Chica DA, Stocks N, Hay P. Burden and health state utility values of eating disorders: results from a population-based survey. Psychological Medicine. 2021 Jan;51(1):130-137. doi: 10.1017/S0033291719003064.

This world-first study found that people with an eating disorder including bulimia nervosa or binge eating disorders have significantly lower quality of life relative to those without an eating disorder and comparable quality of life of those with a mental disorder including generalised anxiety disorder, depression, schizophrenia, panic disorder or mood disorder. Findings of this study was used by the Victorian Royal Commission into Mental Health to inform the impacts of eating disorders on quality of life.

Mihalopoulos C, Le LK, Chatterton ML, Bucholc J, Holt-Lunstad J, Lim MH, Engel L. The economic costs of loneliness: a review of cost-of-illness and economic evaluation studies. Social Psychiatry and Psychiatric Epidemiology. 2020 Jul;55(7):823-836. doi: 10.1007/s00127-019-01733-7.

This review summarizes existing evidence on the cost of loneliness and cost-effectiveness of interventions that aim to alleviate loneliness. The findings highlight a significant evidence gap, calling for more research in that area.