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Rasch Modeling and Differential Item Functioning of the Self-Stigma Scale-Short Version among People with Three Different Psychiatric Disorders

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  • Chia-Wei Fan

    (Department of Occupational Therapy, AdventHealth University, Orlando, FL 32803, USA
    These authors contributed equally to this work.)

  • Kun-Chia Chang

    (Department of General Psychiatry, Jianan Psychiatric Center, Ministry of Health and Welfare, Tainan 71742, Taiwan
    These authors contributed equally to this work.)

  • Kuan-Ying Lee

    (Department of Child and Adolescent Psychiatry, Jianan Psychiatric Center, Ministry of Health and Welfare, Tainan 71742, Taiwan)

  • Wen-Chi Yang

    (Division of Hematology and Medical Oncology, Department of Internal Medicine, E-DA Hospital, Kaohsiung 82445, Taiwan
    Faculty of School of Medicine, College of Medicine, I-Shou University, Kaohsiung 84001, Taiwan)

  • Amir H. Pakpour

    (Department of Nursing, School of Health and Welfare, Jönköping University, SE-551 11 Jönköping, Sweden)

  • Marc N. Potenza

    (Department of Psychiatry, Yale School of Medicine, New Haven, CT 06510, USA
    Connecticut Mental Health Center, New Haven, CT 06519, USA
    Connecticut Council on Problem Gambling, Wethersfield, CT 06109, USA
    Child Study Center, Yale School of Medicine, New Haven, CT 06510, USA)

  • Chung-Ying Lin

    (Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan
    Biostatistics Consulting Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 70403, Taiwan
    Department of Public Health, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan
    Department of Occupational Therapy, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan)

Abstract

Self-stigma is prevalent in individuals with psychiatric disorders and can profoundly affect people. A unified assessment with sound psychometric properties is needed for evaluating self-stigma across psychiatric conditions. The aim of this study was to examine the psychometric properties of the Self-Stigma Scale-Short version (SSS-S) using Rasch modeling. Six-hundred and twelve participants with substance use disorders ( n = 319), attention-deficit/hyperactivity disorder ( n = 100), and schizophrenia ( n = 193) completed the SSS-S. Rasch results confirmed the unidimensionality of the nine items of the SSS-S. The four-point Likert scale of the SSS-S reflected monotonical increases along the self-stigma continuum. No ceiling or floor effects were detected. Among the three subdomains of the SSS-S, cognitive items appeared to be the most robustly endorsed, and behavioral items were the least endorsed. Two items in the SSS-S displayed differential item functioning across the three diagnoses. Additionally, SSS-S scores showed weak to moderate correlation with depression, anxiety, and stress scale scores. The SSS-S had overall satisfactory psychometric properties. Healthcare professionals may use this assessment to assess self-stigma in multiple psychiatric groups, and information gained may facilitate improved care.

Suggested Citation

  • Chia-Wei Fan & Kun-Chia Chang & Kuan-Ying Lee & Wen-Chi Yang & Amir H. Pakpour & Marc N. Potenza & Chung-Ying Lin, 2022. "Rasch Modeling and Differential Item Functioning of the Self-Stigma Scale-Short Version among People with Three Different Psychiatric Disorders," IJERPH, MDPI, vol. 19(14), pages 1-15, July.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:14:p:8843-:d:867887
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    References listed on IDEAS

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    1. Mira Elise Glaser Holthe & Eva Langvik, 2017. "The Strives, Struggles, and Successes of Women Diagnosed With ADHD as Adults," SAGE Open, , vol. 7(1), pages 21582440177, March.
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