title: A high cholecystectomy rate in a cohort of Mexican American women who are postpartum at the time of oral contraceptive pill initiation.
abstract: BACKGROUND
  Opinions regarding the association between gallbladder disease and oral contraceptive (OCs) differ. The objective of this article is to quantify cholecystectomy rate among women initiating OCs.
  
  
  METHODS
  Women under the age of 25 years were enrolled at four sites in a randomized trial evaluating initiation of OCs. Hospitalizations while enrolled were elicited during follow-up interviews, and medical records of women who underwent cholecystectomy were reviewed.
  
  
  RESULTS
  Of 757 women enrolled at University of Texas Southwestern Medical Center (UTSW), 8 underwent cholecystectomy, a rate of 25.3/1000 woman-years (95% CI=8.1, 42.5). All eight were Mexican American and postpartum when they initiated OCs. The expected rate is 4.2/1000 woman-years for U.S. women aged 15-44.
  
  
  CONCLUSIONS
  Women enrolled at the UTSW site had an increased rate of cholecystectomy and were more likely to be postpartum and Mexican American than women enrolled at the other sites.
authors.affiliation: Department of Obstetrics and Gynecology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7030, USA. gstuart@med.unc.edu
authors.forename: Gretchen S
authors.initials: GS
authors.lastname: Stuart
authors.forename: Jennifer H
authors.initials: JH
authors.lastname: Tang
authors.forename: Stephen F
authors.initials: SF
authors.lastname: Heartwell
authors.forename: Carolyn L
authors.initials: CL
authors.lastname: Westhoff
mesh_terms: D000293:Adolescent; D000328:Adult; D002763:Cholecystectomy / Q000706:statistics & numerical data*; D002769:Cholelithiasis / Q000139:chemically induced* / Q000208:ethnology / Q000601:surgery; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D017058:Mexican Americans; D049590:Postpartum Period; D014481:United States / Q000453:epidemiology
chemical_list: D003276:Contraceptives, Oral