Abstract
Summary: In a cross-sectional study of gallstone disease, ascertained by ultrasonography, the prevalence was assessed in relation to clinically diagnosed gallstones in first degree relatives by selected socioeconomic factors. In both sexes, clinically diagnosed gallstones among first degree relatives occurred significantly more frequently among subjects with than among those without gallstone disease. None of the socioeconomic variables was significantly associated with gallstone disease in females. In males gallstone disease was positively associated with longer school education, living alone, and duration of residence in the municipality of Copenhagen.