Japanese version of the Family Stigma Instrument for informal caregivers of people with dementia

This study validates the Japanese version of the Family Stigma Instrument (J-FAMSI-dementia) for assessing dementia-related stigma among family caregivers, demonstrating its acceptable reliability, validity, and five-factor structure through a survey of 372 informal caregivers.

The Gist

Imagine you are caring for a family member with dementia. You are doing your best, but sometimes, when you go out in public, you feel like people are staring, whispering, or avoiding you just because of who you are caring for. You might feel ashamed, embarrassed, or like you have to hide your family member's condition to keep the peace. This isn't just about the person with dementia; it's about the "shadow" that falls on the whole family.

This paper is about a new tool designed to measure that shadow in Japan. Here is the story of the research, explained simply:

The Problem: The Invisible Backpack

Think of dementia stigma like an invisible, heavy backpack that family caregivers are forced to wear.

• Public Stigma: This is when society looks at you and says, "I don't want to be near that family."
• Affiliate Stigma: This is when you start believing them. You feel the shame, you feel sad, and you start hiding your family member to avoid judgment.
• The Missing Piece: Until now, researchers mostly looked at the person with dementia. They didn't have a good way to measure the weight of that backpack on the caregiver. Existing tools were like a ruler that only measured height, but not weight.

The Solution: A New "Stigma Scale"

The researchers took a tool called the Family Stigma Instrument (FAMSI), which was originally made in the UK, and carefully translated it into Japanese. Think of this like taking a high-quality map from one country and redrawing it so it works perfectly for the roads and landmarks of Japan.

They called this new map the J-FAMSI-dementia.

How They Tested It

They asked 372 Japanese family caregivers to fill out a survey. Imagine these caregivers as hikers who were asked to describe their backpacks.

• The Questions: The survey asked things like, "Do you feel people are embarrassed to be around your family?" (The "Stigma by Association" part) and "Do you feel ashamed yourself?" (The "Affiliate Stigma" part).
• The Twist: Uniquely, this scale also asked about the bright spots. It asked, "Has caring for your family member made you feel stronger or more loved?" This is important because caregiving isn't just a burden; it can also be a source of growth, like a muscle that gets stronger under pressure.

What They Found

The results were very encouraging:

1. The Map Works: The survey successfully separated the different types of "backpack weight." It could tell the difference between "society judging me" and "me feeling ashamed."
2. The Weight is Real: About half of the caregivers felt that society was uncomfortable around them (like people refusing to visit their homes). However, fewer caregivers felt personally ashamed, suggesting that while the world is judgmental, many Japanese caregivers are still holding their heads high.
3. The Connection: As expected, the heavier the "stigma backpack," the more depressed and burdened the caregivers felt. Conversely, those who found "bright spots" (positive aspects) in their caregiving felt less burdened.
4. Cultural Nuance: Interestingly, in Japan, caregivers felt more emotional distress (shame) than they did behavioral changes (hiding). This might be because Japanese culture places a huge value on "face" and public appearance. Even if no one says anything out loud, the fear of what people might think hurts deeply.

Why This Matters

This study is like giving doctors and social workers a new pair of glasses.

• Before: They could see the person with dementia struggling.
• Now: They can see the invisible backpack the caregiver is carrying.

By using this new tool, support groups and policymakers in Japan can better understand the specific pain points of caregivers. They can create programs that don't just say "take a break," but specifically help caregivers deal with the shame and judgment they face from society.

The Bottom Line

This paper proves that we now have a reliable way to measure the emotional toll of stigma on Japanese families. It's a step toward helping caregivers take off that heavy, invisible backpack, so they can continue to care for their loved ones with dignity and support.

Technical Summary

1. Problem Statement

Dementia affects a rapidly growing global population, placing immense burdens on informal caregivers. While overcoming dementia-related stigma is a recognized international priority, existing assessment tools have significant limitations:

• Focus Gap: Most research and instruments focus on public stigma (societal attitudes) and self-stigma (internalized by the patient), neglecting the specific stigma experienced by family caregivers.
• Conceptual Limitations: Existing scales for caregivers (e.g., the Affiliate Stigma Scale) often focus narrowly on internalized stigma, failing to capture the full spectrum of the stigma process, which includes societal perception, emotional reaction, behavioral avoidance, and the potential for positive caregiving experiences.
• Cultural Context: There is a lack of validated tools to assess family stigma specifically within the Japanese cultural context, where concepts of "face," collective responsibility, and familism may influence how stigma is perceived and internalized.

2. Methodology

The study aimed to translate, adapt, and validate the Family Stigma Instrument for dementia (FAMSI-dementia) into Japanese (J-FAMSI-dementia).

• Participants:
  • Sample: 372 informal caregivers (aged 18–79) of family members with dementia.
  • Recruitment: Internet-based survey via a large panel agency (Macromill Inc.).
  • Inclusion Criteria: Unpaid caregivers of family members aged ≥65; excluded institutional caregivers.
  • Retest Group: A random 30% subsample ($n=103$) completed a retest two weeks later to assess stability.
• Instrument (J-FAMSI-dementia):
  • Structure: A 26-item multidimensional scale comprising five subscales:
    1. Stigma by Association: Recognition of societal negative evaluations (8 items).
    2. Perceived Affiliate Stigma: Feeling excluded or discriminated against (4 items).
    3. Affective Affiliate Stigma: Negative emotions (shame, distress) (4 items).
    4. Behavioral Affiliate Stigma: Avoidance behaviors (4 items).
    5. Positive Aspects of Caregiving: Gains and growth from caregiving (6 items).
  • Translation: Rigorous forward-backward translation process involving social welfare, health care, and public health researchers, with final review by original UK authors.
  • Scale: 5-point Likert scale (1 = Strongly Disagree to 5 = Strongly Agree).
• Validation Measures:
  • Dementia Attitude: Four-Item Attitudes toward People Living with Dementia Scale (APDS4).
  • Caregiver Burden: Japanese Zarit Burden Interview-8 (J-ZBI_8).
  • Depressive Symptoms: Japanese Patient Health Questionnaire-9 (J-PHQ-9).
• Statistical Analysis:
  • Confirmatory Factor Analysis (CFA) for structural validity.
  • Cronbach's alpha for internal consistency.
  • Intraclass Correlation Coefficients (ICC) for test-retest reliability.
  • Pearson correlation analyses for construct validity (hypothesized relationships with burden, depression, and attitudes).

3. Key Results

• Factor Structure (Validity):
  • CFA supported the original five-factor model.
  • Fit Indices: While some indices were slightly below the strict >0.95 threshold (GFI=0.867, AGFI=0.838), others indicated acceptable fit (CFI=0.919, TLI=0.908, RMSEA=0.063). The model was deemed acceptable for the Japanese context.
• Reliability:
  • Internal Consistency: High Cronbach's alpha values across all subscales (ranging from 0.814 to 0.886). The total affiliate stigma subscale was 0.930.
  • Test-Retest Reliability: Moderate to good stability over two weeks. ICCs ranged from 0.61 (Stigma by Association) to 0.77 (Affective/Behavioral Affiliate Stigma and Positive Aspects).
• Construct Validity (Correlations):
  • Stigma vs. Burden/Depression: Stigma by association and affiliate stigma subscales showed positive correlations with caregiver burden and depressive symptoms, and negative correlations with positive dementia attitudes.
  • Positive Aspects: The "Positive Aspects of Caregiving" subscale showed weak or no correlation with the stigma subscales, suggesting that positive and negative experiences are distinct dimensions rather than opposite ends of a single spectrum.
• Prevalence of Stigma:
  • Approximately one-third to one-half of caregivers reported experiencing stigma by association (e.g., others refusing to visit or listen).
  • Interestingly, affective affiliate stigma (feeling distressed/shame) was endorsed more frequently than perceived or behavioral stigma, a pattern differing from previous UK studies.

4. Key Contributions

• First Validated Tool in Japan: Provides the first psychometrically sound instrument to assess the multidimensional nature of family stigma in the Japanese context.
• Holistic Framework: Unlike previous tools, the J-FAMSI-dementia captures the entire stigma process: from societal perception (association) to internalization (perceived, affective, behavioral) and crucially, includes positive caregiving experiences.
• Cultural Insight: The data suggests that in Japan, caregivers may experience significant internal emotional distress (affective stigma) even without strong evidence of direct behavioral discrimination, potentially reflecting cultural nuances regarding "public appearance" and collective shame.
• Methodological Rigor: Demonstrates that the FAMSI structure is robust across cultures, supporting its use in cross-cultural stigma research.

5. Significance and Implications

• Clinical and Research Utility: The J-FAMSI-dementia enables researchers and clinicians to identify specific types of stigma (e.g., emotional vs. behavioral) affecting caregivers, allowing for more targeted interventions.
• Policy and Support: By validating the "Positive Aspects" dimension, the tool supports a shift from a purely deficit-based model to a resilience-based approach, helping to identify coping strategies that mitigate stigma.
• Future Directions: The findings highlight the need for culturally specific support strategies in Japan that address the unique psychological burden of "face" and collective responsibility. The tool can also be used to evaluate the effectiveness of anti-stigma campaigns and caregiver support programs.

Limitations Noted: The study relied on self-reported dementia diagnoses (not clinical verification) and used an internet panel that underrepresented spousal caregivers, suggesting a need for population-based validation in the future.