Dialectical Behaviour Therapy (DBT) has long been established as an effective intervention for people experiencing intense emotional distress and suicidal behaviours. However, for a long time, there has been a significant treatment gap for autistic adults with suicidality. Until now. A new study published in The European Journal of Health Economics has explored the cost-effectiveness of DBT for autistic adults with suicidal thoughts — and the results are encouraging. Not only was DBT clinically effective, but it also proved to be cost-effective from both healthcare and societal perspectives.

The Need: Autism and Elevated Suicide Risk

Autism Spectrum Disorder (ASD) affects around 1.1% of the population and is often accompanied by psychiatric comorbidities, including depression and anxiety. Autistic adults are known to face a markedly elevated risk of suicidal ideation and suicide attempts. One study cited in the paper reported a lifetime prevalence of 37.2% for suicidal thoughts and 13.4% for suicide attempts among autistic adults.

Despite this clear need, there has been no well-established, evidence-based treatment specifically targeting suicidality in this group—until now.

The Study: DBT vs Treatment As Usual

Researchers in the Netherlands conducted a single-blind, randomised controlled trial comparing DBT with treatment as usual (TAU) for 123 autistic adults with suicidal behaviours. Participants received either a full programme of DBT or standard therapeutic interventions already in place within the Dutch mental health system. The full programme of DBT consisted of individual therapy, group skills training, phone coaching, and therapist consultation.

Outcomes were measured over 12 months and included quality-adjusted life years (QALYs), changes in suicidal ideation, and healthcare and societal costs.

The Results: A Clear Signal

From a healthcare perspective, DBT emerged as the dominant treatment option. It reduced suicidal ideation more effectively than TAU while costing €371 less per person over the year. Participants in the DBT group experienced greater improvements in quality of life, with a QALY gain of 0.184—an impressive result within this kind of evaluation.

From a broader societal perspective, DBT did cost slightly more—€232 per QALY gained—but this is still well below the commonly accepted cost-effectiveness threshold of €50,000 per QALY. In other words, DBT delivers significantly better outcomes for a relatively minor additional investment.

In terms of treatment response, 57% of participants receiving DBT showed a clinically significant reduction in suicidal ideation. This is compared to only 40% in the TAU group.

Why This Matters

These findings are important for several reasons:

• First, this is the first time a high-quality economic evaluation has shown DBT to be both effective and cost-effective for autistic people struggling with suicidality. This is especially notable given the lack of previous evidence-based options.
• Second, healthcare systems often struggle to allocate funding to interventions for autistic adults, particularly when suicide risk is present. This study provides a compelling financial rationale for investing in DBT for this group.
• Third, the study used robust methodology, including a full health economic evaluation from both healthcare and societal perspectives. This helps in boosting its credibility for policy and commissioning decisions.

What Happens Next?

The authors call for broader implementation of DBT for autistic people with suicidal thought. Not only in the Netherlands but in other countries with similar healthcare systems, including the UK. They also recommend further research into the long-term outcomes and scalability of DBT for this population.

For clinicians, services, and commissioners in the UK, this study opens the door to rethinking provision for a group that has historically been underserved.

At DBT-UK, we know that DBT can be life-saving. Now we also know that it can be a wise investment.

Interested in Reading More?

You can read the full study here
And if you want to know more about how DBT-UK supports autistic adults through DBT-informed care, get in touch with us.

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