[Epidemiology of gallbladder calculi in young females].

In a population sample of nearly 900 women aged less than 25 years, prevalence of gallbladder stones (GS) was estimated by ultrasound and some risk factors were analyzed. GS were found in 4.8 percent. The prevalence of GS is significantly higher in females with GS in the family history as compared to persons without known GS in the family (11.8 vs. 2.6 percent); in women who have born as compared to nulliparae (10 vs. 3 percent); in obese women (BMI 26 or higher) as compared to lean women (15.1 vs. 4.2 percent). There was no significant correlation between intake of oral contraceptive and prevalence of GS.