| Summary: | Abstract Somatization is a widespread phenomenon causing subjective suffering and disability. The aim of the study was to assess somatization disorder (SD) and somatization symptoms among young adult population and their associations with sociodemographic factors, alexithymia and temperament as well as psychiatric comorbidity. Various suggestions have been presented to operationalize somatization but none of them has been shown to be superior to others. In this study two definitions were used: SD by DSM-III-R classification diagnostic criteria and "somatization" meaning four or more symptoms of the 35 symptoms of DSM-III-R SD criteria. The study population was a subsample of the Northern Finland Birth Cohort 1966 (NFBC 1966), consisting of cohort members living in Oulu (N = 1,609) on January 1st 1997. The NFBC 1966 is a general population birth cohort of 12,058 live-born children covering 96.3% of all deliveries in the catchment area. The best-estimated procedure was used for assessment of psychiatric morbidity including SD and somatization. Data were collected from the Finnish Hospital Discharge Register and from all available outpatient and inpatient records. Data on education were gathered from Statistics Finland. Other sociodemographic variables, alexithymia and temperament scores were drawn from questionnaires of the field study conducted in 1997 and from earlier follow-up studies. The prevalence of SD was 1.1% (N = 18). Of the subjects 6.1% (N = 97) had somatization. The female-to-male ratio was 5:1 and 6:1, respectively. SD was not recognized by any of the treating physicians, at least not documented in case notes. The observed occurrences of SD and somatization were at a level comparable with earlier international population studies. Somatization did not associate with depression or alexithymia, and neither could a characteristic temperament profile be recognized. Somatization was associated with psychological distress. These results indicate a need for training physicians to recognize SD and ...
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