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Delphi Consensus on Forensic Mental Health Systems and ServicesFor the First Time, Experts Agree on What Forensic Mental Health Care Should Look Like

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Key Takeaway
Consider this Delphi consensus framework to guide forensic mental health service development and evaluation.

This publication is an international Delphi consensus guideline involving 23 experts in forensic mental health, including those with lived experience, clinical practice, and academic research. The panel engaged in a structured Delphi process to develop a shared understanding of forensic mental health systems and services.

The authors synthesized consensus into a final statement comprising three elements: a definition of forensic mental health services, a general statement including 12 guiding principles, and 43 core components organized across 10 thematic domains. Consensus was defined as ≥75% of the 23 panelists rating an item between 7 and 9 on the rating scale.

The guideline does not report primary outcomes, effect sizes, p-values, confidence intervals, or adverse events, as this was a consensus-building exercise rather than an intervention study. The authors did not identify specific limitations within the process.

The document provides a structured framework for understanding forensic mental health systems, offering a foundation to support service development and evaluation across diverse jurisdictions. It should be interpreted as a consensus-based resource, not as evidence of clinical outcomes or patient-level effects.

Forensic mental health sits at the difficult intersection of healthcare and the legal system. It involves people who have committed crimes but may not be legally responsible due to their mental state.

This affects a significant number of people. In many countries, a large portion of the prison population has a diagnosed mental health condition. These individuals often fall through the cracks of standard care.

The problem is a lack of clear standards. Without a shared definition, care can vary wildly. One facility might focus only on security, while another focuses only on therapy. This inconsistency hurts recovery and makes it hard to measure success.

The Old Way vs. The New Way

In the past, forensic mental health was often defined by what it wasn't. It wasn't just prison, and it wasn't just a standard hospital. This left a lot of gray area.

Different regions used different terms and models. This made it nearly impossible to compare results or share best practices across borders.

But here’s the twist: a group of 23 experts has now drawn a clear line in the sand.

They didn't just guess. They used a rigorous method called a Delphi process. This involves multiple rounds of voting and discussion until a strong agreement is reached. The panel included people with lived experience, clinicians, and researchers.

How It Works: Building a Consensus

Think of this process like building a complex Lego set without the instructions. At first, everyone has a different idea of what the final model should look like.

The Delphi method acts as the guide. In the first round, experts suggest pieces. In later rounds, they vote on which pieces to keep, change, or discard.

They rated items on a scale from 1 to 9. To make the cut, an item needed at least 75% of experts to rate it between 7 and 9. This is a high bar. It ensures that only the most agreed-upon ideas make it into the final framework.

It’s like a traffic system for ideas. The process filters out the noise and keeps only the strongest, most supported concepts.

The Study Snapshot

The researchers gathered 23 international experts. These experts were chosen because they have direct experience with forensic mental health services. This includes people who have used the services, clinicians who work in them, and academic researchers.

Over three rounds of anonymous surveys, the panel refined their thoughts. They discussed, revised, and voted on hundreds of potential standards. Finally, they met to resolve any remaining disagreements.

The result is a comprehensive framework with three main parts.

First, they created a clear definition of what forensic mental health services actually are. This simple step alone is a major achievement.

Second, they established 12 guiding principles. These are the core values that should drive care everywhere. They include things like dignity, safety, and recovery.

Third, and most detailed, they identified 43 core components of care. These are organized into 10 key areas. These cover everything from how patients move through the system to the programs they attend and their physical health.

For example, the framework emphasizes the importance of involving people with lived experience in designing and evaluating services. It also stresses the need for safe environments that are not overly restrictive.

The goal is to provide a flexible blueprint. It gives a clear structure but allows different countries to adapt it to their own laws and cultures.

Where Things Get Interesting

While the panel achieved strong consensus, some areas sparked lively debate.

One major discussion point was how to integrate cultural expertise into the framework. Another was the role of a "lived experience workforce"—hiring people who have personally recovered from forensic mental health issues to help others.

There was also a debate about which elements were purely descriptive (just describing what exists) and which were aspirational (what we should aim for). Resolving these nuances was key to creating a practical, usable document.

The study authors note that this framework provides a much-needed foundation. It allows services to benchmark their performance against international standards.

It also creates a common language. When a doctor in Australia talks to a doctor in Canada, they can now use the same terms and concepts. This collaboration is essential for improving care globally.

If you or a loved one is involved in the forensic mental health system, this is a hopeful step forward.

It means that the quality of care may become more consistent and predictable over time. It gives advocates a powerful tool to demand better services based on international standards.

This doesn’t mean this treatment is available everywhere right now.

However, it gives policymakers and hospital administrators a clear checklist to work from. If you are seeking care, you can ask if your local service aligns with these new international principles.

This study is a starting point, not an endpoint. The framework is based on expert opinion, not on direct patient outcomes data.

Also, the panel was relatively small, with 23 experts. While they were international, the group may not represent every possible perspective. Finally, consensus is not the same as implementation. Agreeing on standards is one thing; putting them into practice is another challenge entirely.

The next step is adoption. The researchers hope that governments, hospitals, and legal systems will use this framework to guide policy and service development.

Future work will involve testing these components in real-world settings. Researchers will need to measure if following these standards actually improves patient outcomes, reduces reoffending, and increases safety.

This blueprint is now in the hands of the global community. It is up to leaders to use it to build better care for some of the most vulnerable people in society.

Study Details

Study typeGuideline
EvidenceLevel 5
PublishedApr 2026
View Original Abstract ↓
ObjectivesThe present study aimed to establish a consensus on a definition of forensic mental health systems and services, and to identify principles and components of forensic mental health systems.MethodsA Delphi consensus-building process was employed among 23 experts in forensic mental health, defined by lived experience of forensic mental health services, professional, clinical or management practice in forensic settings, or academic research in the field. Items were rated on a 9-point Likert scale, with consensus defined as ≥75% of panelists rating an item between 7 and 9. Across three Delphi rounds, items were revised, merged, or added based on participant feedback. Data were collected anonymously using LimeSurvey, with reminders sent to maximize participation, followed by a structured consensus meeting to resolve remaining areas of disagreement.ResultsThe final consensus statement comprises three components: (1) a definition of forensic mental health services; (2) a general statement including 12 guiding principles; and (3) 43 core components organized across 10 thematic domains addressing models of care, pathways and processes, programs and activities, physical health, service user and peer involvement, evaluation and improvement, service integration, safe environments, restrictive practices, and other system-level considerations. While all items achieved consensus at the consensus meeting, areas of sustained discussion related to the integration of cultural expertise, the inclusion of a lived experience workforce, and the distinction between descriptive and aspirational elements of forensic mental health services.ConclusionsThis international consensus statement provides a structured framework for understanding forensic mental health systems. By articulating shared principles and core components while allowing flexibility across jurisdictions, the framework offers a foundation to support service development and evaluation across diverse jurisdictions.
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