Psychiatric comorbidity in alcoholism: importance of ascertainment source

Although psychiatric comorbidity is often observed among individuals in treatment facilities for alcoholism, the prevalence and pattern of psychiatric comorbidity among alcoholic cirrhotics has not been well characterized. The present study aimed first to compare the prevalence of psychiatric comorbidity in cirrhotic individuals with alcoholism ascertained from a gastroenterology service with alcoholics ascertained from a treatment facility for alcoholism. Consistent with the findings of other investigators, the data suggest that there is a great degree of variability regarding the severity of alcoholism in alcoholic cirrhotic individuals. Furthermore, cirrhotics with alcoholism exhibited a less severe clinical picture of alcoholism as measured by less alcohol dependence and lower prevalence of psychiatric comorbidity than individuals in treatment for alcoholism. The main conclusion of this study is that ascertainment source is an important determinant of psychiatric comorbidity observed in alcoholic samples.