Diagnostic Accuracy of the Somatic Symptom Disorder B Criteria Scale (SSD-12) in Primary Care – Cross-Sectional Study

Diagnostic Accuracy of the Somatic Symptom Disorder B Criteria Scale (SSD-12) in Primary Care – Cross-Sectional Study - DiaSSD

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00037839

Enrollment

350

Registered

2025-09-04

Start date

2025-10-01

Completion date

Unknown

Last updated

2026-06-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

ICD11: 6C20 Somatic Symptom Disorder

Interventions

Group 1: Outpatients in general practice are invited to participate during their routine general practicioner (GP) consultation. During the visit, they complete the Somatic Symptom Disorder B Criteria

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: • Visit to a general practice with a planned personal consultation with a general practitioner • Sufficient knowledge of the German language • Written and oral informed consent to participate in the study

Exclusion criteria

Exclusion criteria: • Patient without capacity to consent • Already diagnosed illness associated with severe cognitive impairment (e.g., dementia)

Design outcomes

Primary

Measure	Time frame
Assessment of the diagnostic accuracy of the SSD-12 questionnaire in primary care, using the SCID as the reference standard.	—

Secondary

Measure	Time frame
Determination of the sensitivity and specificity of the cut-off points of the Somatic Symptom Disorder B Criteria Scale (SSD-12). Examination of the diagnostic accuracy of the combination of the SSD-12, the Somatic Symptom Scale-8 (SSS-8), and an item assessing symptom duration (Criterion C: symptoms persisting for at least six months). In the long term, the study aims to investigate to what extent the SSD-12 (and the SSS-8) can support the diagnosis of Somatic Symptom Disorder in primary care.	—

Measure

Time frame

Determination of the sensitivity and specificity of the cut-off points of the Somatic Symptom Disorder B Criteria Scale (SSD-12). Examination of the diagnostic accuracy of the combination of the SSD-12, the Somatic Symptom Scale-8 (SSS-8), and an item assessing symptom duration (Criterion C: symptoms persisting for at least six months). In the long term, the study aims to investigate to what extent the SSD-12 (and the SSS-8) can support the diagnosis of Somatic Symptom Disorder in primary care.

—

Countries

Germany

Contacts

Public ContactAntonius Schneider

Institut für Allgemeinmedizin und Versorgungsforschung, TUM School of Medicine and Health, Technische Universität München

allgemeinmedizin@mri.tum.de+49 89 614658918

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Jun 11, 2026