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Somatization in Family Practice: Comparing 5 Methods of Classification
Denis J. Lynch1, Angele McGrady, Rollin Nagel
1Departments of Family Medicine and Psychiatry, Medical College of Ohio, Toledo.
Primary Care Companion to the Journal of Clinical Psychiatry
|March 12, 2004
Summary
Diagnostic methods for somatoform disorders significantly impact prevalence rates. This study highlights the need for consistent diagnostic criteria to accurately assess somatoform disorders and their association with medical care utilization.
Area of Science:
- Psychiatry
- Medical Diagnosis
- Health Services Research
Background:
- Somatoform disorders are often associated with high healthcare utilization.
- Previous research is limited by inconsistent diagnostic methods.
- Accurate diagnosis is crucial for understanding patient care needs.
Purpose of the Study:
- To compare five different diagnostic classification methods for somatoform disorders.
- To examine the prevalence rates of somatoform disorders using these methods.
- To investigate the relationship between somatoform disorders and medical service utilization.
Main Methods:
- A group of 119 patients at a family practice center participated.
- Subjects completed questionnaires and the Diagnostic Interview Schedule (DIS).
- Medical charts were reviewed to assess healthcare utilization.
Main Results:
- Prevalence rates varied widely, from 1 case (DSM-IV DIS criteria) to 94 cases (undifferentiated somatoform disorder).
- Different scoring modifications (Bucholz, Escobar, Kroenke) yielded varying numbers of diagnoses.
- The study identified significant differences in somatization symptom prevalence based on diagnostic criteria.
Conclusions:
- Diagnostic method significantly influences the reported prevalence of somatoform disorders.
- Standardized diagnostic approaches are essential for reliable research and clinical practice.
- Medical utilization may serve as an external criterion for validating diagnostic methods.