Psychometric evaluation and community norms of the Somatic Symptom Scale-8 based on a representative German sample (opens in new tab)

BackgroundThe Somatic Symptom Scale-8 (SSS-8) is a brief self-report instrument assessing somatic symptom burden derived from the PHQ-15. The aims of the present study were providing updated population norms for Germany based on a new representative sample and enabling a direct comparison with the original 2012 normative sample. In addition, the study aimed to examine the psychometric properties of the SSS-8, evaluate construct validity, and test factorial validity and measurement invariance....