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- Document type:
- Journal Article; Validation Studies; Article
- Author(s):
- Toussaint, Anne; Murray, Alexandra M; Voigt, Katharina; Herzog, Annabel; Gierk, Benjamin; Kroenke, Kurt; Rief, Winfried; Henningsen, Peter; Löwe, Bernd
- Title:
- Development and Validation of the Somatic Symptom Disorder-B Criteria Scale (SSD-12).
- Abstract:
- To develop and validate a new self-report questionnaire for the assessment of the psychological features of Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition somatic symptom disorder.The Somatic Symptom Disorder-B Criteria Scale (SSD-12) was developed in several steps from an initial pool of 98 items. The SSD-12 is composed of 12 items; each of the three psychological subcriteria is measured by four items. In a cross-sectional study, the SSD-12 was administered to 698 patients (65.8% female, mean [standard deviation] age = 38.79 [14.15] years) from a psychosomatic outpatient clinic. Item and scale characteristics as well as measures of reliability and validity were determined.The SSD-12 has good item characteristics and excellent reliability (Cronbach ? = .95). Confirmatory factor analyses suggested that a three-factorial structure that reflects the three psychological criteria interpreted as cognitive, affective, and behavioral aspects (n = 663, Comparative Fit Index > 0.99, Tucker-Lewis Index > 0.99, Root Mean Square Error of Approximation = 0.06, 90% confidence interval = 0.01-0.08). SSD-12 total sum score was significantly associated with somatic symptom burden (r = 0.47, p < .001) and health anxiety (r = 0.71, p < .001), and moderately associated with general anxiety (r = 0.35, p < .001) and depressive symptoms (r = 0.22, p < .001). Patients with a higher SSD-12 psychological symptom burden reported higher general physical and mental health impairment and significantly higher health care use.The SSD-12 is the first self-report questionnaire that operationalizes the new psychological characteristics of Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition somatic symptom disorder. Initial assessment indicates that the SSD-12 has sufficient reliability and validity to warrant further testing in both research and clinical settings.
- Journal title abbreviation:
- Psychosom Med
- Year:
- 2016
- Journal volume:
- 78
- Journal issue:
- 1
- Pages contribution:
- 5-12
- Language:
- eng
- Fulltext / DOI:
- doi:10.1097/PSY.0000000000000240
- Pubmed ID:
- http://view.ncbi.nlm.nih.gov/pubmed/26461855
- Print-ISSN:
- 0033-3174
- TUM Institution:
- Klinik und Poliklinik für Psychosomatische Medizin und Psychotherapie
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