Comparison of four diagnostic systems for the diagnosis of somatization disorder

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Abstract
This article compares the Feighner criteria, the DSM‐III criteria for somatization disorder and a modified version of the proposed ICD‐10 criteria. Working with a data set collected from the charts of 250 patients considered likely to have unexplained somatic symptoms, the kappa statistic and percentage agreement was calculated. The kappa between the DSM‐III and DSM‐III‐R criteria is 0.93. Between the modified ICD‐10 and DSM‐III it was 0.71, but between Feighner and the modified ICD‐10 it was 0.44. However, the different criteria identify the same patient population based on mental co‐morbidity and demographics. The authors suggest that the modified version of the proposed ICD‐10 should be investigated further, as it can use data sets previously collected for assessments of somatization disorder.

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