title: Comparison of different criteria for diagnosis of gestational diabetes mellitus.
abstract: BACKGROUND
  The International Association of Diabetes in Pregnancy Study Group (IADPSG) criteria for gestational diabetes mellitus (GDM) has been adopted by most associations across the world including the American Diabetes Association and World Health Organization (WHO). We conducted a study comparing the IADPSG and previous WHO criteria and their effects on neonatal birth weight.
  
  
  METHODS
  The study was carried out in Obstetrics and Gynaecology Department of a tertiary care institute in South India in collaboration with Endocrinology Department. Thousand two hundred and thirty-one antenatal cases with at least one risk factor for GDM and gestational age of more than 24 weeks were included in the study. Both criteria were compared on the basis of 75 g oral glucose tolerance test results.
  
  
  RESULTS
  The prevalence of GDM using IADPSG and previous WHO criteria were 12.6% and 12.4%, respectively. The prevalence of GDM was 9.9% when both criteria had to be satisfied. Both GDM criteria groups did not differ in neonatal birth weight and macrosomia rate. However, there was a significant increase in lower segment cesarean section in IADPSG criteria group. Elevated fasting plasma glucose alone picked up only one GDM in the previous WHO criteria group.
  
  
  CONCLUSIONS
  A single 2 h plasma glucose is both easy to perform and economical. A revised WHO criterion using a 2 h threshold of ≥140 mg % can be adopted as a one-step screening and diagnostic procedure for GDM in our country.
authors.affiliation: Department of Obstetrics and Gynecology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
authors.forename: Haritha
authors.initials: H
authors.lastname: Sagili
authors.affiliation: Department of Endocrinology and Metabolism, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
authors.forename: Sadishkumar
authors.initials: S
authors.lastname: Kamalanathan
authors.affiliation: Department of Endocrinology and Metabolism, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
authors.forename: Jayaprakash
authors.initials: J
authors.lastname: Sahoo
authors.affiliation: Department of PSM, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
authors.forename: Subitha
authors.initials: S
authors.lastname: Lakshminarayanan
authors.affiliation: Department of Obstetrics and Gynecology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
authors.forename: Reddi
authors.initials: R
authors.lastname: Rani
authors.affiliation: Department of Obstetrics and Gynecology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
authors.forename: D
authors.initials: D
authors.lastname: Jayalakshmi
authors.affiliation: Department of Biostatistics Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
authors.forename: K T Hari Chandra
authors.initials: KT
authors.lastname: Kumar
keywords: Gestational diabetes mellitus; International Association of Diabetes in Pregnancy Study Group; World Health Organization; macrosomia; outcomes