title: Diet-treated gestational diabetes mellitus: comparison of early vs routine diagnosis.
abstract: OBJECTIVE
  The purpose of this study was to compare pregnancy outcomes in women with diet-treated gestational diabetes mellitus (GDM) that was diagnosed at < 24 weeks of gestation to those women who received the diagnosis at > or = 24 weeks of gestation.
  
  
  METHODS
  This was a retrospective cohort study of 2596 women with diet-treated GDM who delivered between December 1999 and June 2005 at Parkland Hospital. Women with risk factors for GDM underwent immediate glucose screening; women without risk factors underwent universal glucose screening between 24 and 28 weeks of gestation. Women with diet-treated GDM that was diagnosed at < 24 weeks of gestation (n = 339; 13.1%) were compared with those women who received the diagnosis at > or = 24 weeks of gestation.
  
  
  RESULTS
  Women with an earlier diagnosis of diet-treated GDM were at increased risk of preeclampsia and the delivery of large infants. Even after adjustment for differences in maternal characteristics and glycemic control, the risk of preeclampsia persisted (odds ratio, 2.4; 95% CI, 1.5, 3.8).
  
  
  CONCLUSIONS
  Women with an early diagnosis of diet-treated GDM have a 2-fold increased risk of preeclampsia.
authors.affiliation: Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, TX 75390-9032, USA. jzhawk@parknet.pmh.org
authors.forename: J Seth
authors.initials: JS
authors.lastname: Hawkins
authors.forename: Julie Y
authors.initials: JY
authors.lastname: Lo
authors.forename: Brian M
authors.initials: BM
authors.lastname: Casey
authors.forename: Donald D
authors.initials: DD
authors.lastname: McIntire
authors.forename: Kenneth J
authors.initials: KJ
authors.lastname: Leveno
mesh_terms: D000328:Adult; D015331:Cohort Studies; D016640:Diabetes, Gestational / Q000175:diagnosis* / Q000178:diet therapy*; D042241:Early Diagnosis; D005260:Female; D006801:Humans; D011247:Pregnancy; D011264:Pregnancy Trimesters; D012189:Retrospective Studies