Developing an initial program theory for peer support groups for substance-affected family members: a participatory realist evaluation

Using a participatory realist evaluation framework, this study develops an initial program theory for peer support groups serving substance-affected family members in Canada, identifying how organizational support, skilled facilitation, and positive group culture interact to foster emotional wellbeing, self-efficacy, and reduced social isolation.

The Gist

Imagine a family living in a storm where a loved one is struggling with addiction. In this storm, the family members are often left holding the umbrella alone, getting soaked, and feeling like no one understands the weight of what they are carrying. This paper is about building a shelter for those family members—a specific kind of shelter called a peer support group called "Parents Forever."

The researchers didn't just ask, "Does this shelter work?" They wanted to understand the blueprint: How does the shelter keep people dry? Why does it work in some storms but not others? They used a method called "Realist Evaluation," which is like being a detective trying to figure out the secret recipe for a successful cake, rather than just tasting the cake and saying, "It's good."

Here is the story of their findings, broken down into simple parts:

1. The Foundation: The "Gardeners" and the "Soil"

Before the shelter can even be built, you need good soil and gardeners who care.

• The Soil (Organizational Support): The program needs a home that actually listens. The researchers found that the program survived for 25 years because the organization running it didn't just throw money at the problem; they respected the "lived expertise" of the people running it. They treated the family members' experiences as valuable wisdom, not just "problems to fix."
• The Gardener (The Facilitator): The person leading the group (a parent named Frances Kenny) was special. She wasn't a doctor or a therapist in the traditional sense. She was a parent who had been through the exact same storm. Because she had "been there," she had a unique kind of magic. She combined her own hard-earned wisdom with training to guide the group.
• The Secret Sauce: The organization supported this gardener with clinical supervision (like a coach for the coach) and funding. This made the gardener feel valued, which made her pour even more passion into the group.

2. The Structure: The "Safe House"

Once the foundation is set, the group itself acts as a "Safe House."

• The Atmosphere: When families arrived, many were desperate and exhausted. The facilitator created a space where they felt safe, accepted, and not blamed. Imagine walking into a room where everyone nods and says, "I know exactly how heavy that backpack feels," instead of saying, "You should have done X."
• The Rules of the House: The group had a special balance. It wasn't a chaotic free-for-all, but it wasn't a rigid lecture hall either. The facilitator kept things moving but let people share their stories. They focused on "reasonable hope"—not promising a fairy-tale ending, but showing that small steps forward are possible.
• The "Magic" Moment: Because everyone shared similar experiences (parents of adult children with addiction), the walls of isolation crumbled. Participants realized, "I am not crazy, and I am not alone."

3. The Tools: What Happens Inside the House?

Once people felt safe and connected, the group offered three main tools to help them rebuild their lives:

• Emotional Support (The Hug): Just being heard by people who understand. This reduced the feeling of being alone in the dark.
• Education (The Map): Learning about addiction and the toxic drug crisis so they weren't flying blind.
• Skill-Building (The Toolkit): Learning how to set boundaries, communicate better, and manage their own stress.

The Result: What Changed?

The paper found that when these three layers worked together, families experienced:

• Less Isolation: They made friends who "got it."
• Better Mood: They felt less stressed and more hopeful.
• More Confidence: They felt more capable of handling their situation.
• Better Relationships: Some even found their relationships with their struggling loved ones improved, not because the loved one stopped using drugs immediately, but because the family member changed how they reacted.

The Catch (The "Ready" Factor)

The paper also notes that this shelter doesn't work for everyone at the exact same time.

• The "Heavy" Factor: Some people were too overwhelmed to listen to other people's sad stories yet. They needed to heal a bit before they could join the circle.
• The "Stuck" Factor: Sometimes, seeing others in the group who were still struggling with the same issues made some participants feel sad or frustrated. It reminded them that the road is long.

The Big Takeaway

This paper argues that to help families affected by addiction, we shouldn't just treat them as "codependent" people who need to cut their loved ones off. Instead, we should build peer-led groups where:

1. The organization respects the family's experience.
2. The leader has lived experience and is well-supported.
3. The group creates a safe, non-judgmental space.

When these conditions are met, the group becomes a powerful engine that turns isolation into connection and despair into hope. The paper concludes that this model is a proven blueprint for helping families survive the storm, but it needs ongoing funding and respect to keep the shelter standing.

Technical Summary

Technical Summary: Developing an Initial Program Theory for Peer Support Groups for Substance-Affected Family Members

Problem Statement
Amidst an unregulated drug crisis in Canada, particularly in British Columbia where toxic drug poisonings are the leading cause of death for those aged 10–59, the needs of affected family members have been largely ignored. While individualistic responses to addiction often focus on the substance user, affected family members face chronic stress, strain, and a lack of support, often exacerbated by negative interactions with formal care systems and a scarcity of social support. Although peer support interventions are known to be effective in health and social care, there is a significant gap in understanding how peer support groups specifically produce outcomes for substance-affected family members. Current literature lacks a detailed explanation of the mechanisms through which these groups function, hindering successful implementation and evaluation of family-focused supports.

Methodology
This study employs a participatory realist evaluation framework to develop an Initial Program Theory (IPT) for "Parents Forever" (PF), a peer support group for affected family members in the Fraser East of British Columbia. The research was conducted within a broader Community-Based Participatory Research (CBPR) partnership involving program staff, participants, and peer consultants.

• Data Collection: The study utilized a multi-tiered data collection strategy, including:
  • Semi-structured interviews with program staff and participants.
  • Qualitative program evaluation surveys administered in 2019, 2021, and 2024 (53 respondents).
  • Internal program documents and peer-developed resources.
  • Observational field notes from support group meetings.
  • Non-empirical literature and prior research findings.
• Analytical Approach: The analysis followed a realist paradigm, utilizing the Context-Mechanism-Outcome Configuration (CMOC) heuristic. The researchers employed deductive and inductive coding, followed by retroductive analysis to theorize how contexts, mechanisms, and outcomes interact. The analysis was iterative, moving from initial coding to the refinement of nested implementation contexts. The study adhered to the RAMESES II Quality Standards for Realist Evaluation.

Key Contributions
The primary contribution of this paper is the development of an Initial Program Theory (IPT) that explains the causal pathways of a peer support group for substance-affected families. The study moves beyond asking if the program works to explain what works, for whom, under what circumstances, how, and why.

Key theoretical contributions include:

1. The "Ripple Effect" in CMOCs: The application of a nested context model where the outcome of one phase of implementation becomes the context for the next.
2. Integration of the Stress-Strain-Coping-Support (SSCS) Model: The IPT aligns with the SSCS model, affirming that affected family members require support "in their own right" rather than solely as adjuncts to the substance user's treatment.
3. Participatory Realism: The study demonstrates how combining realist causal insights with the lived experience of community partners can generate robust program theories.

Results
The analysis identified three nested implementation contexts containing 10 specific CMOCs that explain the program's efficacy:

• Context 1: Strong Organizational Support in a Peer-Empowered Environment.
  • Findings: Sustainability is driven not just by funding, but by organizational operators who value "lived expertise." When an organization provides ongoing funding and respects the facilitator's lived experience (even without formal clinical credentials), it activates mechanisms of passion and investment. This environment allows for participant-driven access and program sustainability.
• Context 2: Accessible Program Coordinated by a Skilled Peer Facilitator.
  • Findings: A skilled facilitator with shared lived experience leverages unique approaches (relational engagement, non-pathological stance, balance of structure/adaptation, and orientation towards hope) to foster a positive group culture. This context is critical for engaging participants who often arrive in a state of desperation. The facilitator's ability to create safety and trust activates participant willingness to engage.
• Context 3: Strong, Positive, Engaged Group Culture Supporting Key Pillars.
  • Findings: A culture of safety, trust, and mutual understanding activates the program's three pillars: emotional support, education, and skill-building.
    • Emotional Support: Reduces social isolation and improves emotional wellbeing.
    • Education: Increases self-efficacy and understanding of addiction.
    • Skill-building: Facilitates better communication and boundaries, leading to improved relationships with loved ones.
  • Nuance: The study notes that outcomes are contingent on participant readiness. Those ready to hear others' stories and apply skill-building tools achieve the most significant interpersonal and individual benefits.

Significance and Claims
The paper claims that this participatory realist evaluation provides a foundational Initial Program Theory (IPT) that can inform the future implementation and evaluation of peer support groups for substance-affected families.

• Corrective Approach: The IPT suggests that programs aligned with the SSCS model offer a corrective to service landscapes dominated by pathologizing frameworks (e.g., codependency theory) that may blame family members or encourage cutting off loved ones. Instead, this model supports families in their own right.
• Implementation Guidance: The theory highlights that successful replication requires more than just a curriculum; it requires strong organizational support that values lived expertise, a skilled peer facilitator, and an environment that fosters a non-pathological, hopeful group culture.
• Future Directions: The authors modestly state that further research is needed to test and refine the IPT in broader settings, specifically examining the cost-effectiveness and long-term financial sustainability of such third-sector community groups. They emphasize that while the IPT is accurate based on the current data, it is a starting point for broader implementation rather than a final, definitive guide.