Validation of the Chinese version of the Somatic Symptom Scale-8 in patients from tertiary hospitals in China

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Titel: Validation of the Chinese version of the Somatic Symptom Scale-8 in patients from tertiary hospitals in China

Beteiligte: Li, Tao [Verfasser:in]; Wei, Jing [Verfasser:in]; Fritzsche, Kurt [Verfasser:in]; Toussaint, Anne [Verfasser:in]; Zhang, Lan [Verfasser:in]; Zhang, Yaoyin [Verfasser:in]; Chen, Hua [Verfasser:in]; Wu, Heng [Verfasser:in]; Ma, Xiquan [Verfasser:in]; Li, Wentian [Verfasser:in]; Ren, Jie [Verfasser:in]; Lu, Wei [Verfasser:in]; Leonhart, Rainer [Verfasser:in]

Erschienen: Freiburg: Universität, 2022

Umfang: 1 Online-Ressource

Sprache: Englisch

DOI: 10.3389/fpsyt.2022.940206

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Anmerkungen: Frontiers in psychiatry. - 13 (2022) , 940206, ISSN: 1664-0640

Beschreibung: Abstract: Objective: To validate the Chinese language version of the Somatic Symptom Scale-8 (SSS-8) in a sample of outpatients attending tertiary hospitals in China. Materials and methods: A Chinese language version of the SSS-8 was completed by outpatients (n = 699) from psychosomatic medicine, gastroenterology/neurology, and traditional Chinese medicine clinics of nine tertiary hospitals between September 2016 and January 2018 to test the reliability. The Patient Health Questionnaire-15 (PHQ-15), the Somatic Symptom Disorder–B Criteria Scale (SSD-12), the Patient Health Questionnaire-9 (PHQ-9), the General Anxiety Disorder-7 (GAD-7) scale, the Medical Outcome Study 12-item Short Form Health Survey (SF-12) and the World Health Organization Disability Assessment Schedule (WHO DAS 2.0) were rated to test construct validity. The criterion validity was tested by using the Semi-structured Clinical Interview for DSM-5 (Research Version) (SCID-5-RV) for somatic symptom disorder (SSD) as the diagnostic gold standard to explore the optimal cutoff score of the SSS-8. Results: The average age of the recruited participants was 43.08 (±14.47). 61.4% of them were female. The internal consistency derived from the sample was acceptable (Cronbach α = 0.78). Confirmatory factor analyses resulted in the replication of a three-factor model (cardiopulmonary symptoms, pain symptoms, gastrointestinal and fatigue symptoms) (comparative fit index = 0.95, Tucker-Lewis index = 0.92, root mean square error of approximation = 0.10, 90% confidence interval = 0.08–0.12). The SSS-8 sum score was highly associated with PHQ-15 (r = 0.74, p < 0.001), SSD-12 (r = 0.64, p < 0.001), GAD-7 (r = 0.59, p < 0.001), and PHQ-9 (r = 0.69, p < 0.001). The patients with more severe symptoms showed worse quality of life and disability The optimal cutoff score of SSS-8 was 9 (sensitivity = 0.67, specificity = 0.68). Conclusion: Our preliminary assessment suggests that the Chinese language version of the SSS-8 has reliability and validity sufficient to warrant testing further in research and clinical settings

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