title: Gestational diabetes mellitus in an Iranian pregnant population using IADPSG criteria: Incidence, contributing factors and outcomes.
abstract: OBJECTIVE
  Different approaches for screening and diagnosis of gestational diabetes mellitus(GDM) have great impact on all process of management of gestational diabetes and its future complications. The aims of this study were to evaluate rate, risk factors and outcomes of GDM based on International Association of Diabetes and Pregnancy Study Groups diagnostic criteria.
  
  
  METHODS
  In a prospective study pregnant women attended 5 clinics in Ahvaz, screened for gestational diabetes mellitus using IADPSG criteria and followed up delivery from August 2014 to February 2015. At the first prenatal visit women underwent the fasting blood sugar test. A 75-g oral glucose tolerance test (OGTT) was performed for 750 mothers between 24 and 32 weeks of gestation. Logistic regression test for calculating the odds ratios and 95% confidence intervals was used.
  
  
  RESULTS
  The mean age of participants was 28.43±5.52years. The overall rate of GDM in our study was 29.9% (224/750). Incidence of gestational diabetes was associated with age group≥35years [OR=1.92(95% CI, 1.19-3.09)], family history of diabetes [OR=2.47(95% CI, 1.33-4.59)], previous GDM [OR=3.12(1.35-7.19)], BMI≥25 [OR=1, 71(1.10-2.67)] Using logistic regression. The most common maternal complication in studied women was cesarean section followed by hypertension and preeclampsia.
  
  
  CONCLUSIONS
  About one third of studied women diagnosed as GDM according to the IADPSG criteria. Risk factors of GDM were maternal age, family history of diabetes, Previous GDM, overweight and obesity before pregnancy, the same reported factors with 2 steps approach. Higher rate of GDM using this criterion may increase concern about healthcare costs and workloads.
authors.affiliation: Health Research Institute, Diabetes Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
authors.forename: Hajieh
authors.initials: H
authors.lastname: Shahbazian
authors.affiliation: Health Research Institute, Diabetes Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Electronic address: s_nouhjah@yahoo.com.
authors.forename: Sedigheh
authors.initials: S
authors.lastname: Nouhjah
authors.affiliation: Obstetrics and Gynecology Department, Fertility Infertility and Perinatology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
authors.forename: Nahid
authors.initials: N
authors.lastname: Shahbazian
authors.affiliation: School of Population and Public Health, University of British Columbia, Vancouver, Canada.
authors.forename: Shayesteh
authors.initials: S
authors.lastname: Jahanfar
authors.affiliation: Health Research Institute, Diabetes Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
authors.forename: Seyed Mahmoud
authors.initials: SM
authors.lastname: Latifi
authors.affiliation: Health Research Institute, Diabetes Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
authors.forename: Armaghan
authors.initials: A
authors.lastname: Aleali
authors.affiliation: Health Research Institute, Diabetes Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
authors.forename: Nasrin
authors.initials: N
authors.lastname: Shahbazian
authors.affiliation: Obstetrics and Gynecology Department, Fertility Infertility and Perinatology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
authors.forename: Najmieh
authors.initials: N
authors.lastname: Saadati
mesh_terms: D000293:Adolescent; D000328:Adult; D015415:Biomarkers / Q000032:analysis; D001786:Blood Glucose / Q000032:analysis; D016640:Diabetes, Gestational / Q000097:blood / Q000175:diagnosis / Q000453:epidemiology*; D005260:Female; D005500:Follow-Up Studies; D005951:Glucose Tolerance Test; D006442:Glycated Hemoglobin / Q000032:analysis; D006801:Humans; D015994:Incidence; D007492:Iran / Q000453:epidemiology; D011247:Pregnancy; D011248:Pregnancy Complications / Q000097:blood / Q000175:diagnosis / Q000453:epidemiology*; D011256:Pregnancy Outcome; D011254:Pregnancy in Diabetics / Q000097:blood / Q000175:diagnosis / Q000453:epidemiology*; D011446:Prospective Studies; D012307:Risk Factors; D055815:Young Adult
chemical_list: D015415:Biomarkers; D001786:Blood Glucose; D006442:Glycated Hemoglobin; C517652:hemoglobin A1c protein, human
keywords: Feto-maternal outcomes; Gestational diabetes mellitus; International Association of Diabetes and Pregnancy Study Groups; Iran; Oral glucose tolerance test